B Diminished Major 7th
Bdim(maj7) · Root
Every chord tone stacked from the root up.
Click keys to experiment with the chord
B – D – F – A♯
1 – b3 – b5 – 7
The Bdim(maj7) chord sounds distinctive, with a diminished major 7th character. Its notes are B, D, F, A#. This chord is commonly heard in gypsy jazz.