Can anyone help me understand the theory behind what is happening with this chord progression?
The verse goes
F / Gm7 / Bb / F / Dm7 / F/C / Bb / C
So I view this as just being in F Major with all diatonic chords
But on the next round it end on Eb instead of C before going into the chorus. I assume this is either a borrowed chord (bVII) or a pivot chord - or both
The chorus then goes
Bb / F / Bb / F / Ab / Eb / C/E / F / D/F# / Gm / Bb/F / Edim / Eb / F / Bb
Then it is back to the verse. I assume this chorus has modulated to the key of Bb but that's as far as I can get with analysing it. There is so much going on here and would be great to understand it a little more.
Can anyone help?