But then the key signature changes after the final bar to B flat; Would we then recite on the E flat, the fourth degree of B flat? - and resolve to to "C."
Remember that Viadana set his falsobordone to the tones used in Venice at the time. It won't match exactly the Liber usualis tones. We are using his Tone VIII setting and transposed it down a step, placing the psalm tone in the alto. Works pretty well. Transpose away.
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