Keywords
- Sacred vocal music11
- Sanctus (Music)1
- Sequences (Liturgy)1
- Sequences (Music)2
- Service books (Music)7
- Service books (Music)--Catholic Church7
- Seventeenth century4
- Sixteenth century23
- Songbooks1
- Songs and music1
- Spain9
- Specimens10
- Texts22
- Thirteenth century13
- Tract verses1
- Twelfth century1
- Watermarks4
- Wooden boards1
- annotations1
- bastarda1