MCE 8: Anonymous, Natus sapientia
Edited by Cristina Cassia
Differently from most of the motetti missales cycles, the anonymous cycle Natus sapientia was not entered in the Gaffurian Libroni, but in the so-called ‘Leopold Codex’ (D-Mbs Mus. Ms. 3154), immediately following another missales cycle, Gaude flore virginali. The Leopold Codex, currently preserved in the Bayerische Staatsbibliothek, Munich, was apparently compiled in Innsbruck. On the basis of an accurate study of the forty-five different watermarks appearing in the manuscript’s paper, Thomas Noblitt established that its compilation had stretched over a few decades, from around 1466 to around 1511. Conceived probably as a repository, this manuscript contains mixed repertory (mainly motets, masses, and Magnificats) entered by forty-three scribes. Its two sections were originally copied and foliated separately (respectively 1–200, of which 1–19 are now lost, and 1–297) and then bound together. In the nineteenth century, during the compilation of a catalogue of the music manuscripts held by the Bayerische Staatsbibliothek, Julius Joseph Maier added in blue pencil the piece numbering and a continuous foliation, to which we refer in the present edition. Only 26 out of 174 compositions included in the manuscript carry an attribution (to Guillaume Du Fay, Heinrich Isaac, and Johannes Martini among others), but a few more can be added through concordances in coeval sources.
The cycles Gaude flore virginali and Natus sapientia, both of which are unica and presumably to be ascribed to a single composer, are quite different in many respects from the missales entered in the Gaffurian Libroni; therefore it is not clear what kind of connection they might have with Milan. The Leopold Codex gatherings containing both cycles were dated through their paperʼs watermarks to 1476 and Gaude flore virginali and Natus sapientia were probably copied around that date. The Milanese missales cycles by Loyset Compère and Gaspar van Weerbeke were also composed during the 1470s: in fact, Compère’s cycles date around 1474–76 (at latest 1477 in the case of the Galeazescha), while those of Weerbeke are probably connected with his first stay in Milan from 1471–72 to 1481. It is unclear whether the anonymous composer of the Munich missales had a good knowledge of the Milanese ones, as surmised by Noblitt, or not: in fact, no objective element allows to establish a direct link between them.
Concerning their possible composer, Noblitt first proposed to ascribe the Munich cycles to Johannes Martini, who spent a few months in Milan in 1474 and was a singer in the Sforza chapel. This hypothesis was based on a few – and, admittedly, insubstantial – stylistic similarities between these cycles and Martini’s works. Moreover, Noblitt explained the presence of motetti missales in a manuscript compiled in Innsbruck with one or more possible trips to this city that Martini might have made to meet one of his friends, the organist Paul Hofhaimer. A few years later, however, Noblitt himself withdrew this conjecture without providing any explanation, and no other attribution has been advanced so far.
As the other missales by Loyset Compère and Gaspar van Weerbeke contained in the Libroni, Natus sapientia consists of eight motets:
|no.||motet||rubric||position in the MS||foliation|
|1||Natus sapientia||‘loco Introitus’||I||43v|
|2||Cito derelictus||[loco Gloria]||II||44r|
|3||Hora prima||‘loco Patrem’||III||44v|
|4||Crucifige clamitant||‘loco Offertorii’ (added later)||V||45v–46r|
|5||Iugo est crucis||[loco Sanctus]||VI||46v–47r|
|6||Iesus dominus exspiravit||‘post Elevationem’ (added later)||IV||45r|
|7||Fortitudo latuit||[loco Agnus]||VII||47v–48r|
|8||Datur sepulturae||[loco Deo gratias]||VIII||48v|
Scholars usually agree on the eight-motet structure, with the only exception being Maier, who only counted seven motets, probably considering motet 2 as the second part of motet 1, because they both are composed on a single stanza of the text.
As the table shows, the logical sequence of the motets does not match their order of appearance in the manuscript: in fact, the motet ‘post Elevationem’ (no. 6) was copied before its correct position, on a folio previously left blank (f. 45r). This awkward placement is simply due to the fact that page layout is not consistent through the cycle but rather changes according to the length of each single motet. Indeed, longer motets require an entire opening, where two voices are accommodated on the verso of a folio and two on the recto of the following one, while shorter motets have all four voices one after the other on a single page. After copying motets 3 (on a single page) and 4 (on an entire opening), a single page was left over between them, and the scribe decided to fill it with motet 6, which precisely required that space.
As for loco rubrics, during the copying of the cycle, the scribe inserted only ‘loco Introitus’ and ‘loco Patrem’; ‘loco Offertorii’ and ‘post Elevationem’ were added later by another hand. According to Gerhard Croll, who considers this cycle specifically associated with the liturgy of the Passion, the second motet probably has to be considered loco Kyrie, since during the Lenten season no Gloria could be sung. However, this hypothesis has to be discarded, since no missales cycle with written down rubrics contains such an indication. In any case, according to the latest research, the correspondence between loco rubrics and liturgical moments was not meant to be precise: the music superimposed on the spoken mass was probably a continuous flow and the Elevation was the only moment in which the two layers were synchronized. Loco rubrics were thus only useful to orient oneself approximately within the mass; therefore, whatever label would have been implied for this motet, it makes as good as no difference from the point of view of performance. One could also wonder why the scribe, during the copying, inserted just two rubrics. In fact, the first, ‘loco Introitus’, is essential to immediately recognize that this cycle belongs to the category of motetti missales; the insertion of ‘loco Patrem’ in fact does not seem to have a particular meaning. The later addition of ‘loco Offertorii’ and ‘post Elevationem’ rubrics can instead easily be explained as a reminder, taking into account that the position of those motets in the manuscript does not correspond to their logical order within the cycle. Concerning the remaining four motets without loco indications, their function is clear from their position, and thus rubrics are unnecessary.
Differently from the texts of the missales by Compère and Weerbeke, which draw from multiple sources, Natus sapientia is entirely based on a hymn for the Short Office of the Cross, with the only interpolation being the antiphon ‘Adoramus te Christe’ at the end of motet 5. The hymn, presumably written in the first third of the fourteenth century and usually ascribed to Aegidius Romanus or Pope John XXII, was widespread, and is also attested in Milanese sources. Its text, written in Goliardic metre, contains hypermetric and hypometric verses. Since hymn melodies are usually strophic and are not very suitable for verses of different lengths, this hymn was probably more often read than sung, although recent research provides evidence of a few monodic intonations. In all the extant sources, the hymn begins with the slightly different incipit ‘Patris sapientia’, but ‘Natus’ was apparently attested in a fourteenth-century manuscript from Vienna, which unfortunately was stolen in the 1920s. However, it can not be excluded that, both in the Leopold Codex and in the Vienna manuscript, ‘Natus’ might result from a misreading of the initial capital ‘P’. The hymn Patris sapientia also constitutes the bulk of Loyset Compère’s Officium de cruce, a nine-motet cycle first published by Ottaviano Petrucci in Motetti B and then transmitted by other sources. Differently from the setting in the Leopold Codex, in Compère’s cycle the seven motets on the Patris sapientia hymn are preceded by two additional motets, of which the second was composed on the above-mentioned antiphon ‘Adoramus te Christe’.
Two major changes have been made in setting this text to music in the missales cycle: first, the initial stanza of the hymn is divided between motets 1 and 2, causing an awkward change in the original meaning of the text. Second, only the first seven stanzas, corresponding to the seven canonical hours, were set to music, while the last one, which contains an invocation to Christ, was left out. Moreover, motets 4, 7, and 8 lack a half or an entire verse at the beginning, which contains precise references to the hours, and in motet 5 the section ‘Adoramus te Christe’ was added to accompany the Elevation.
According to Noblitt, this cycle was performed on Maundy Thursday and probably also in votive masses during the year. However, given that the hymn Patris sapientia is attested not only in liturgical books, but also in prayer books, and that it was recited by confraternities during their gatherings, this motet cycle was probably also performed on different occasions in devotional contexts, for purposes of anamnesis and recollection.
Beside the text, the unity of the cycle is also achieved through the same head-motif (c''-b'-g'-a'-g') in motets 1, 3, 5, and 7, and similar ones in nos. 2, 4, and 6, and by recurring harmonic and/or melodic patterns. No cantus prius factus, however, has been detected so far. With respect to the style of the Milanese missales, Natus sapientia presents several differences: imitation is more rarely used, and mostly the pieces are built on full-voice counterpoint, with fewer changes in texture and a reduced number of duos. Moreover, while the other missales that include sesquialtera sections always end this way, motet 3 of Natus sapientia begins in a ternary meter but finishes in a duple one.
The cycle Natus sapientia was entered by the anonymous scribe labelled by Noblitt as ‘A’, who is also the main scribe responsible for the first part of the manuscript. As for most of the pieces contained in this section, Scribe A provided the text only in the Cantus and left the other voices textless. The copyist’s work is quite inaccurate, as shown mainly by the frequent mistakes and, especially, by the absence of clefs in the whole cycle, for which no space has been left; their position can be reconstructed with some difficulty through the awkward placement of the key signatures, which sometimes varies from stave to stave even within a single voice. Even the positioning of the key signatures with respect to the calligraphic initials (also written by Scribe A) is sometimes wrongly reversed and not consistent within single folios. The space left at the beginning of each motet to insert the initial in the Cantus voice sometimes remained empty; however, even in these cases, the first word of each motet never lacks the first letter. Final barlines are also missing. All these inaccuracies suggest that this cycle was probably never performed directly from the Leopold Codex. It is not clear whether the numerous mistakes in both music and text are due to the copyist or were already present in the model that he used. However, it is all the more strange that Scribe A probably referred to the same manuscript for copying the above-mentioned missales cycle Gaude flore virginali, in which clefs and initials are always written properly. Surely missing clefs in Natus sapientia would not be a problem for singers if the key signatures were correctly positioned; thus it is possible that clefs were also missing in the model. The random placement of key signatures, instead, is probably due to Scribe A’s negligence, since they change from one stave to another, and therefore he would have needed to maintain exactly the same layout of the ancestor to reproduce them properly.
The present edition deviates in some respects from that of Noblitt. He provided the text only in the Cantus voice, as in the manuscript, but in two forms: first in a diplomatic transcription, respecting both the words’ spelling and their original position under the notes, and then in an editorial one, with normalized spelling and the text placed according to the editor’s choice. In this edition, instead, no diplomatic text is given and an editorial text has been added to all voices to facilitate performance. In fact, although the cycle was probably never sung directly from the Leopold Codex, it might have been performed in this way from other sources now lost. The addition of the missing text in the bottom voices was not always straightforward and a few ligatures were ignored in order to accommodate all the syllables. However, this solution seems preferable to the vocalization without any text of these three voices, if account is taken of the frequent homorhythmic passages and repeated notes, and, especially, of the long Altus–Tenor duo in motet 4, measures 7–19 (with twelve breve rests in the Cantus and a complete verse of the hymn missing if the other voices simply vocalize).
Editorial interventions in the music – slightly more numerous than in Noblittʼs edition – are limited to corrections of mistakes and listed in the Critical apparatus. Dissonances produced by passing notes, as awkward as they may sound, were not modified to avoid altering the single voices’ melodies and the overall effect, since they seem to be compositional choices rather than simple mistakes that need to be fixed. All clefs are editorial and wrong key signatures were moved to their right position.
Basel, November 2020
 The designation ‘Leopold’ comes from the name of one of its owners, ‘Magistri nicolai leopoldi ex insprugga’, found in the manuscript. For information concerning Nicolaus Leopold, see Thomas L. Noblitt, ed., Der Kodex des Magister Nicolaus Leopold: Staatsbibliothek München Mus Ms. 3154, 4 vols, Das Erbe deutscher Musik 80–83 (Kassel: Bärenreiter, 1987–1996), I: vii–viii. For similarities and differences between Natus sapientia and Gaude flore virginali, see Felix Diergarten, ‘“Gaude flore virginali” – Message from the “Black Hole”?’, in Motet Cycles between Devotion and Liturgy, ed. Daniele V. Filippi and Agnese Pavanello, Schola Cantorum Basiliensis Scripta 7 (Basel: Schwabe, 2019), 429–55, at 443–44.
 For the most recent description of the manuscript, see Ian Rumbold, ‘Munich, Bayerische Staatsbibliothek, Mus. Ms. 3154’, in The Production and Reading of Music Sources: Mise-en-Page in Manuscripts and Printed Books Containing Polyphonic Music, 1480–1530, ed. Thomas Schmidt and Thomas Christian Leitmeir (Turnhout: Brepols, 2018), 287–348. A digital copy of the manuscript is available online at https://daten.digitale-sammlungen.de/~db/0005/bsb00059604/images/.
 See Thomas Noblitt, ‘Die Datierung der Handschrift Mus. Ms. 3154 der Staatsbibliothek München’, Die Musikforschung, 27, no. 1 (1974), 36–56, at 38 and 46–47.
 See Charles Hamm, ‘Interrelationships between Manuscript and Printed Sources of Polyphonic Music in the Early Sixteenth Century – An Overview’, in Datierung und Filiation von Musikhandschriften der Josquin-Zeit, ed. Ludwig Finscher, Quellenstudien zur Musik der Renaissance 2 (Wiesbaden: Otto Harrassowitz, 1983), 2–13, at 2.
 Rumbold, ‘Munich, Bayerische Staatsbibliothek, Mus. Ms. 3154’, 285, 287–89.
 The first part of the Leopold Codex actually corresponds to ff. 1–171. Natus sapientia (no. 30) is found on ff. 43v–48v. For detailed information concerning the manuscript’s contents, see Rumbold, ‘Munich, Bayerische Staatsbibliothek, Mus. Ms. 3154’, 287–89.
 See Noblitt, Der Kodex des Magister Nicolaus Leopold, I: viii.
 For stylistic similarities between the two cycles, see Diergarten, ‘“Gaude flore virginali”’, 443–44.
 For example, duo sections are not so frequent and quick triple sections are lacking; see Joshua Rifkin, ‘Milan, Motet Cycles, Josquin: Further Thoughts on a Familiar Topic’, in Motet Cycles between Devotion and Liturgy, ed. Filippi and Pavanello, 221–336, at 223. On Gaude flore virginali, see also Diergarten, ‘“Gaude flore virginali”’, 436–37.
 According to Joshua Rifkin, ‘Munich, Milan, and a Marian Motet: Dating Josquin’s “Ave Maria … Virgo Serena”’, Journal of the American Musicological Society, 56, no. 2 (2003), 239–350, at 246, n. 20, the Munich missales come from Milan as well. However, the text of the cycle Gaude flore virginali contains peculiar readings which are not attested at all in Italy, but are only found in prayer books coming from beyond the Alps: this suggests that this cycle could have a northern origin. See Diergarten, ‘“Gaude flore virginali”’, 434.
 Noblitt, ‘Die Datierung der Handschrift’, 46, 50, and, more recently, Rifkin, ‘Milan, Motet Cycles, Josquin’, 223.
 See Gaspar van Weerbeke, Collected Works: The Motet Cycles, ed. Andrea Lindmayr-Brandl, Corpus Mensurabilis Musicae 106/3 ([s.l.]: American Institute of Musicology; Hänssler-Verlag, 1998), xi.
 See Noblitt, ‘Die Datierung der Handschrift’, 50.
 See Lewis Lockwood and Murray Steib, ‘Martini, Johannes’, Grove Music Online 2001; accessed 9 Sept. 2020.
 The two main stylistic aspects on which Noblitt based his reasoning are ‘the introduction of a perfect fourth in a two-voice texture as a 3-4 escape tone’, and the divisi in the final chords; see Thomas L. Noblitt, ‘The “Motetti Missales” of the Late Fifteenth Century’ (Ph.D. diss., University of Texas, 1963), 144–50. There is no evidence of Martini’s trip(s) to Innsbruck, as Noblitt also concedes. See also Thomas L. Noblitt, ‘The Ambrosian “Motetti Missales” Repertory’, Musica Disciplina, 22 (1968), 77–103, at 84–85.
 See Noblitt, Der Kodex des Magister Nicolaus Leopold, IV: 364, no. 32.
 For this hypothesis, see Noblitt, ‘The “Motetti Missales”’, 9. Julius Joseph Maier, Die musikalischen Handschriften der K. Hof- und Staatsbibliothek in München. Erster Theil: Die Handschriften bis zum Ende des XVII. Jahrhunderts (Munich: 1879), 20, only stated that the cycle includes seven motets.
 Noblitt, ‘The “Motetti Missales”’, 10.
 Among the other five missales cycles contained in the Libroni, only Compère’s Hodie nobis de virgine and [Missa] Galeazescha and the anonymous Ave domine Iesu Christe (also probably composed by him; see the Introduction to MCE 2) feature explicit loco rubrics. Concerning their meaning, see Daniele V. Filippi, ‘“Audire missam non est verba missae intelligere...”: The Low Mass and the Motetti Missales in Sforza Milan’, Journal of the Alamire Foundation, 9, no. 1 (2017), 11–32, at 23–24, and Daniele V. Filippi, ‘Breve guida ai motetti missales (e dintorni)’, in Codici per cantare: I Libroni del Duomo nella Milano sforzesca, ed. Daniele V. Filippi and Agnese Pavanello, Studi e saggi 27 (Lucca: Libreria Musicale Italiana, 2019), 139–69, at 148–51.
 Gerhard Croll, ‘Das Motettenwerk Gaspars van Weerbeke’ (Ph.D. diss., Georg-August Universität, 1954), 188, n. 1.
 See Noblitt, ‘The “Motetti Missales”’, 102–3. The hypothesis of a loco Kyrie had also been suggested for Gaffurius’s missales cycle Salve mater salvatoris in the introduction to Franchino Gaffurio, Mottetti, ed. Luciano Migliavacca, Archivium Musices Metropolitanum Mediolanense 5 (Milan: Veneranda Fabbrica del Duomo di Milano, 1959), iv. Noblitt, Der Kodex des Magister Nicolaus Leopold, IV: 365, provides for motet 2 the editorial rubric ‘[Loco Gloria]’. See also Fañch Thoraval, ‘“Horologia Passionis”: Hours, Hymns and Motet Cycles for the Cross and the Passion’, in Motet Cycles between Devotion and Liturgy, ed. Filippi and Pavanello, 93–132, at 108–9.
 See Filippi, ‘“Audire missam”’, 21–29, and Filippi, ‘Breve guida ai motetti missales’, 151–57.
 This antiphon is commonly associated with the Cross Office; see Thoraval, ‘“Horologia Passionis”’, 122. For the presence of this text in the Libroni and its popularity as an Elevation prayer, see Agnese Pavanello, ‘The Elevation as Liturgical Climax in Gesture and Sound: Milanese Elevation Motets in Context’, Journal of the Alamire Foundation, 9, no. 1 (2017), 33–59, at 43.
 Stefan Matter, ‘Das Stundenlied “Patris sapientia” und seine deutschsprachigen Übertragungen. Zu einem Schlüsseltext der spätmittelalterlichen Gebetbuchliteratur’, in Die Kunst der brevitas. Kleine literarische Formen des deutschsprachigen Mittelalters. Rostocker Kolloquium 2014, ed. Franz-Josef Holznagel and Jan Cölln, Wolfram-Studien 24 (Berlin: Erich Schmidt Verlag, 2017), 137–53, at 140. For other ascriptions, see Noblitt, ‘The “Motetti Missales”’, 98.
 See Daniele V. Filippi, ‘Where Devotion and Liturgy Meet: Re-Assessing the Milanese Roots of the “Motetti Missales”’, in Motet Cycles between Devotion and Liturgy, ed. Filippi and Pavanello, 53–91, at 87. Concerning polyphonic settings of this hymn, Thoraval, ‘“Horologia Passionis”’, 100, has counted at least a dozen settings dated from the end of the fifteenth century to the first half of the sixteenth, adding, however, that he has provided ‘a non-comprehensive overview’.
 This metre is based on word accent; each strophe usually consists of four lines, and each line, which counts thirteen syllables, can be divided into two parts, the first containing seven syllables and the second six. See Susan Boynton, ‘From Book to Song: Texts accompanying the Man of Sorrows in the Fourteenth and Fifteenth Centuries’, in New Perspectives on the Man of Sorrows, ed. Catherine R. Puglisi and William L. Barcham (Kalamazoo: Medieval Institute Publications, 2013), 117–46, at 123.
 Due to its structure, Giacomo Baroffio, ‘Testo e musica nei libri d’ore’, Rivista italiana di musicologia, 34 (2011), 19–77, at 45, excludes that this hymn was sung. See also Boynton, ‘From Book to Song’, 123–24, and 133. However, concerning monodic intonations, see Thoraval, ‘“Horologia Passionis”’, 115–16.
 Vienna, Schottenstiftarchiv, MS 231 (Hübl 157), ff. 83r–85v. See Thoraval, ‘“Horologia Passionis”’, 109, who, taking into account that this manuscript and the Leopold Codex originated from the same region, wonders whether the peculiar readings of the missales cycle might mirror local variants. Both Analecta Hymnica 30, no. 13, p. 32, and Baroffio, ‘Testo e musica nei libri d’ore’, 47–55, do not record any manuscript in which the text begins with this word.
 I thank Bonnie Blackburn for this suggestion.
 In the Officium de cruce the function of Adoramus te Christe is clearly not the same as in Natus sapientia, although its homorhythmic incipit recalls the distinctive feature of the Elevation motets. See MCD M177 Adoramus te Christe.
 The division of the two motets falls in the middle of a single verse (‘a suis discipulis / cito derelictus’), thus dividing words that were meant to be together.
 See Noblitt, ‘The “Motetti Missales”’, 103 (especially concerning the presence of a loco Gloria in votive masses), and Noblitt, Der Kodex des Magister Nicolaus Leopold, IV: 365.
 See Filippi, ‘Where Devotion and Liturgy Meet’, 87–88; Thoraval, ‘“Horologia Passionis’”, 116–18.
 Noblitt, ‘The “Motetti Missales”’, 129.
 For plainsong melodies on ‘Natus sapientia’, see Noblitt, ‘The “Motetti Missales”’, 104.
 Rifkin, ‘Milan, Motet Cycles, Josquin’, 224, n. 10.
 Concerning mensuration changes in Munich missales, see also Clare Bokulich, ‘Meter and the “Motetti Missales”’, in Motet Cycles between Devotion and Liturgy, ed. Filippi and Pavanello, 397–427, at 420–22.
 See Noblitt, ‘Die Datierung der Handschrift’, 45.
 This absence is particularly striking, since they are an essential element and, among the compositions copied by Scribe A, only the whole cycle Natus sapientia and a motet ascribed to Paulus de Roda (Ave salve gaude, no. 20, ff. 23v–25r) completely lack them. In this latter composition, however, key signatures are always consistent and correct, therefore they leave no doubt about the position of the clefs.
 For a table resuming their positions (which, however, do not at all affect the music), see Noblitt, Der Kodex des Magister Nicolaus Leopold, IV: 365.
 See ff. 43v and 48r.
 See ff. 44r, 44v, 45v, 46v. The positioning of the key signatures with respect to the empty space is also not consistent; in the first two cases, they are placed just before the mensuration signs, so that the beginning of the stave is empty; in the other two, they are written at the very beginning of the stave and the empty space lies between key signatures and mensuration signs.
 The indication ‘Missa de Passione Domini nostri Jesu Christi’ found in Noblitt’s edition is an editorial addition, without any correspondence in the manuscript. In fact, it is correctly placed between square brackets in Noblitt, Der Kodex des Magister Nicolaus Leopold, IV: 364, no. 32, but simply appears in italics (as all the rubrics, even editorial ones, and the incipits of all the motets) in II: 151.
 Concerning repeated notes, however, as stated in a similar context by David Fallows, ‘Specific Information on the Ensembles for Composed Polyphony, 1400–1474’, in Studies in the Performance of Late Mediaeval Music, ed. Stanley Boorman (Cambridge: Cambridge University Press, 1983), 109–59, at 132, ‘it is also possible to say that there is no reason whatever why singers on the lower lines of the song [Guillame Du Fay’s Par droit je puis] could not articulate the repeated notes with simple consonants’. As regards the possibility that, at that time, textless voices of sacred polyphonic pieces were played by instruments rather than sung, scholars do not agree, since documents are not conclusive on this point. See, for example, the opposing views of Fallows, ‘Specific Information on the Ensembles for Composed Polyphony’, 130, and David Bryant and Elena Quaranta, ‘Traditions and Practices in Fifteenth- and Sixteenth-Century Sacred Polyphony: The Use of Solo Voices with Instrumental Accompaniment’, in Music as Social and Cultural Practice: Essays in Honour of Reinhard Strohm, ed. Melania Bucciarelli and Berta Joncus (Woodbridge: Boydell Press, 2007), 105–18, at 115–18.
 In his edition Noblitt intervened less frequently, probably because he wanted to preserve the general dissonant character of this cycle; for example, in motet 1, m. 30, Bassus, he left the minim a even though it creates parallel fifths with the Altus, and a strong dissonance. See Noblitt, Der Kodex des Magister Nicolaus Leopold, I: 152.