Introitus - Dominus dixit ad me

[nicholson112358]

The second line from the top is a Bb. Reads harmonically like modern sheet music, but rhythmically, I think they must be improvising...?

[C2209w]

Let me offer an interpretative suggestion: when two or three identical sounds correspond to the same syllabe every single note ought to be sung separately: for example

Do miii nus instead of Do mi nus

or

diii xiiit, and so on.

[C2209w]

Quite slow!!