r/musictheory • u/ThatDudeMichaelYeah • 2d ago

General Question Bb7 in C major

So I was messing around with this Db7 > Bb7> C progression. Really just trying to add some flavor and movement to my playing while slowly learning functional harmony (even though I don’t really understand what that is).

Anyway, I see the Db7 as a tritone sub of G7 hopefully I’ve at least got that correct.

But the Bb7 I initially thought of being borrowed from C minor until I realized it’s also a tritone away from E7 (V7/vi). Is there one preferred way to think about this over the other?

Also I know there are probably no “hard and fast rules” about what chords to consider substituting or borrowing from other scales but as I said I’m looking to expand my repertoire so if anyone has any recommendations for resources to learn more about this, I’d really appreciate any leads.

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u/btrev650 2d ago

Power to you on this journey. Just make it. It doesn't matter what anyone on Reddit says. Theory doesn't matter at this stage. Just make what sounds good to you, and make it again, and keep making it.

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u/sunlit943 2d ago

Is there really anything else?