Bb Chord Progressions: I IV V

Remember from last time:

I. Bb major
ii. Cm
iii. Dm
IV. Eb major
V. F major
vi. Gm
vii(b5). Adim

Many, many, many, many chord progressions in popular music contain some permutation of the I-IV-V progression, and since we're talking about the key of Bb:

I-IV-V can be replaced by the Bb, Eb, and F major chords.

You can change the order of the chords for some familiar-sounding progressions:

As I-IV-V-IV-V: Bb, Eb, F, Eb, and F chords.

As I-V-IV-IV: Bb, F, Eb, and Eb chords.

As IV-I-V: The Eb Lydian-sounding Eb, Bb, and F progression. (Also referred to as I-V-II.)

As V-IV-I: The F Mixolydian-sounding F, Eb, and Bb progression. (Also referred to as I-bVII-IV.)

All this looks a lot like high school algebra, but it sounds better than it looks (pun intended).