Free public domain sheet music from IMSLP / Petrucci Music Library
||Liber selectarum cantionum quas vulgo mutetas appellant
||Liber selectarum cantionum quas vulgo Mutetas appellant sex quinque et quatuor vocum
- According to Grove Music, this is a "collection of 24 Latin hymns by such leading composers as Josquin, Senfl, Pierre de La Rue, Mouton and Obrecht, it includes the imperial motets Virgo prudentissima by Isaac and Sancte Pater, divumque decus by Senfl, and has woodcuts by Hans Weiditz; it is the earliest printed choirbook with the separate parts set out on two facing pages."
- Instrumentation tagging can be done when someone has time to go through the collection and see what it includes.