Neumes! Magical neumes!
Check out these leaves from a breviary dating all the way back to the 11th century. Contains versicle and hymn for first vespers of Passion Sunday, the Magnificat antiphon, the invitatory (from Psalm 94) with neumes, the vesper oration; the hymn at matins (Pange Lingua), and the first lesson at matins with its responsory, with neumes.
Source: Conception, Conception Abbey and Seminary, Special Collections, CA 06