The B-flat dominant seventh chord (abbreviated "Bb7 chord") is a four-note chord consisting of the notes B, D, F, and A. The chord is formed by adding a minor seventh to a B-flat major chord.

Name
B-flat dominant seventh chord
Synonym
B-flat major-minor seventh chord
Notes
B D F A
Intervals
1 3 5 7
Chord symbol
B7
Type
Tetrad (four-note chord)

Bb7 chord on piano

Bb7 chord on guitar

Bb7 chord on ukulele

Bb7 chord on the staff