The source index contains 2 chants.

Siglum	Marg	Folio	Seq	Feast	Office	Genre	Pos	Incipit	Cantus ID	Mode	Diff
D-Mbs 29308(2		1r				Sq		[Benedicta ...] Proprietas in personis ...	ah53081
D-Mbs 29308(2		v				Sq		A[lma chorus domini] compangat	ah53087