O mirabilis potentia crucis

Source: 
Praha (Prague), Národní knihovna České republiky (National Library), XIV.B.13
Folio: 
150r
Sequence: 
3
Feast: 
Exaltatio Crucis
Office/Mass: 
X
Genre: 
V
Position: 
01
Cantus ID: 
604971a
Mode: 
8S
Indexing notes: 
Following this responsory are 8 incipits without notation (are some of them indicating psalms?); "Magnus dominus" (ps47); "Deus in" (ps53 or 69);