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Jul 15, 2021 at 15:08 comment added Laurence You guys REALLY want everything to be 'cycle of 5ths' don't you!
Jul 15, 2021 at 1:44 comment added Chris Strickland bVII7 is a common substitution for V7, so bVII - I is essentially V-I.
Jul 14, 2021 at 23:43 comment added bjb568 Bb to C can be though of as plagal in the sense that it resolves by adding sharps, like F to C. This is especially true if the C chord has a 4-3 suspension, which makes Bb to C cadence look like Bb to F to C. On the other hand, Bb shares notes with G7, so it can act like a dominant. In the context of an Ab also having occurred at some point, Bb to C could be though of as a variant of a Bb to Eb cadence, namely one that resolves deceptively, and with a picardy third. I think ascribing harmonic functions to chords in variant cadences like this depends on the context and voice leading.
Jul 14, 2021 at 22:23 comment added user45266 I think one of the usual names I've heard for it is "minor plagal", for largely this reason.
Jul 14, 2021 at 16:34 history edited Laurence CC BY-SA 4.0
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Jul 14, 2021 at 16:28 history answered Laurence CC BY-SA 4.0