Even verses of the Canticle of Simeon and the doxology, followed by the odd verses of the antiphon "Salva nos domine vigilantes". According to JEPPESEN 1931, 23, two voices might be missing. Luciano Migliavacca (AMMM 9, iv) agreed and edited the piece adding two empty staves. TORELLI 2019, 238, however, suggested to see the piece as a complete two-voice setting, redolent of simple polyphony.