=001  1000002310
=031  ##$a2$b11$c1$eA4. Comincia in due Canti terzegiando, & Bass. & Ten. terzegiando per la metà al riuerso del libro.$gG-2$oc/$p4''E8EDC'BAA2GG$qTranslation of rubric: For four parts, beginning with two Cantus parts in thirds, while the Bass and Tenor are in thirds by means of reversing the book. Four clefs on the left-hand side of the staff: two C and two cut-C, suggesting augmentation.  Two presa signs at the midway point above the staff indicate endpoint for Tenor and Bass. Rubric instruction "al ruers del libra" means that the Tenor needs to imagine a C4 clef instead of the G2 clef. $tNon nobis Domine
=040  ##$aAuArU$beng
=100  1#$aAgostini, Paolo$d1583-1629$02494
=240  10$aCanon à 4: Non nobis Domine$m4vv$0679
=245  10$a[Canon] A 4.
=260  ##$c1627$801
=500  ##$aRubric instruction to turn over the book means that the Tenor and Bass are in contrary motion (as well as augmentation) to Cantus voices. Contrary Motion and Augmentation. Simultaneous beginning of all parts. Cantus 1 (dux) and Tenor (comes) in contrary motion at the 15th above. Cantus 2 doubles Cantus 1 at 3rd below. Bassus doubles Tenor at 3rd below.
=590  ##$aVocal part$bp. 15$801
=593  ##$aPrint$801
=650  07$aCanon$09
=650  07$aHymn$023
=695  ##$acontrary motion canon (inversion canon)$b1$c4$dex$02062
=773  18$w1000002257