How do you play the B m7(alt)/A# chord?

To play the B m7(alt)/A# chord on piano, play the B m7(alt) chord (B, D, G, A and D) with A# as the lowest bass note. Place the A# note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What is a slash chord?

A slash chord (or compound chord) is written as Chord/Bass and specifies both a chord and a bass note. The note to the right of the slash is played as the lowest note. The B m7(alt)/A# chord means a B m7(alt) chord with A# in the bass.

B m7(alt)/A#

Q: What notes are in the B m7(alt)/A# chord?

The B m7(alt)/A# chord uses the 5 notes of the B m7(alt) chord — B (Perfect unison), D (Minor third), G (Minor sixth), A (Minor seventh) and D (Minor tenth) — with A# played as the bass note in the lowest register.

The B m7(alt) chord consists of the B (Perfect unison), D (Minor third), G (Minor sixth), A (Minor seventh) and D (Minor tenth) notes, with A# as the bass note.

Piano keyboard showing the notes for a B m7(alt)/A# chord

How to play the B m7(alt)/A# chord

Play A# as the lowest bass note in the left hand
Find B (Root) on the piano keyboard
Add D (Minor third) — 3 semitones above B
Add G (Minor sixth) — 8 semitones above B
Add A (Minor seventh) — 10 semitones above B
Add D (Minor tenth) — 15 semitones above B
Press all 6 notes simultaneously to sound the B m7(alt)/A# chord

Related slash chords

G add2/A#
G add9/A#
B m7(#5)/A#