10 Sacred songs - BSB Mus.ms. 56 :[stuck label on front binding, inside:] Num: 3. // Missae in Adv[entu] // a 6, 7, et 8 vo[cibus] // Et [p]ro D[omi]n[i]ca L[ae=] // tare. 8 Vo[cum] // cum Organ[o]