What is the Bb Minor Major 7 Chord?
Here's a fretboard view of the Bb Minor Major 7 chord so you can see where each chord tone lives across the neck. This chord is enharmonically equivalent to A# Minor Major 7.
Notes and Arpeggios
The minor-major 7th chord pairs a minor triad with a natural (major) 7th, creating a dramatic, film-noir quality sometimes called "the James Bond chord." The clash between the minor 3rd and major 7th produces a haunting dissonance that's immediately recognizable. The complete chord tones are: Bb, Db, F, A. The complete formula is 1, b3, 5, and 7.
How to Use It
This is especially common in blues and jazz, and it also shows up in funk and R&B comping. On bass, outline the harmony one note at a time. Start from the root and add the chord's actual degrees (b3, 5, and 7) as the arrangement allows. The chord-tone boxes locate notes; the ordered arpeggio gives a playable route with explicit position shifts.
Connect this chord to the next harmony using nearby chord tones. Shift the hand when the line needs it rather than stretching beyond a comfortable position. Use the highlights to spot where the same tone repeats across strings.