Abstract A collection of two manuscript leaves removed from two different antiphonaries. Each leaf consists of two pages of handwritten music for use in a liturgical choir. Both leaves were likely created some time between the 14th and 16th centuries. One of the leaves begins with the chant: "Protector noster aspice Deus," an Introit chant from the Mass from Dom. 14.p Pentecost: Pentecost V, XIV. The other leaf begins with the chant: "Stabant juxta crucem Jesu mater eius," an Introit chant from the...