This Mass has many concordant isolated movements, from which we gather the title (not written in Librone 3). The Mass was reworked by Isaac himself, who added two voices: this new version has a German title, "Missa Wolhauf Gesell von hinnen", and it has been copied twice in the "Leopold Codex". See D-Mbs Mus. MS 3154, ff. 179r-196r (Heinrich Isaac) and 456v-463v (Heinrich Isaac); E-SE Ms. s.s. ("Segovia Codex"; "Cancionero musical de Segovia"; "Cancionero del Alcazar"), ff. 5r-5v; 9r-11r. Modern editions in CMM 65.8, 144-195 and EdM 83, 246-288, no. 172. See also CMM 65.6, xxxii-xxxiii.