All progressions

I vi IV V in Bb: Bb, Gm, Eb, F

Their roots are the first, sixth, fourth and fifth notes of the Bb major scale. Bb, Eb and F are major chords and Gm is a minor chord.

1. Bb

   I

   Bb D F

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2. Gm

   vi

   G Bb D

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3. Eb

   IV

   Eb G Bb

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4. F

   V

   F A C

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I vi IV V in other keys

• C
• Db
• D
• Eb
• E
• F
• F#
• G
• Ab
• A
• B