For the sake of those of us playing along, (IIsus4) may need some explanation. If i = c minor, IIsus4 is D-major with the g from c-minor chord held over (and resolved when?) followed by a return to c-minor?
(VII, IIsus4, i) doesn't quite seem to make sense to me, as there is no note of VII that can be held over to be the 4 in IIsus4. In any case, it is hard to imagine what the voice leading of the first two chord progressions might be in 4-part harmony. It would be a big help if these were spelled out more fully.
Isus+4, I, bVIIsus+4, bVII, bVIsus+4, bVI, bVsus+4, bV, I, holding onto the resolutions into the suspended augmented 4th of the new chord. Really colorful if it's not a true suspension, but an added note.
Spelling the low Bb as an A# might help the singers find it. It would change the analysis, of course.
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