How do you play the Bb m(maj11)/Ab chord?

To play the Bb m(maj11)/Ab chord on piano, play the Bb m(maj11) chord (Bb, Db, F, A, C and Eb) with Ab as the lowest bass note. Place the Ab 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 Bb m(maj11)/Ab chord means a Bb m(maj11) chord with Ab in the bass.

Bb m(maj11)/Ab

Q: What notes are in the Bb m(maj11)/Ab chord?

The Bb m(maj11)/Ab chord uses the 6 notes of the Bb m(maj11) chord — Bb (Perfect unison), Db (Minor third), F (Perfect fifth), A (Major seventh), C (Major ninth) and Eb (Perfect eleventh) — with Ab played as the bass note in the lowest register.

The Bb m(maj11) chord consists of the Bb (Perfect unison), Db (Minor third), F (Perfect fifth), A (Major seventh), C (Major ninth) and Eb (Perfect eleventh) notes, with Ab as the bass note.

Piano keyboard showing the notes for a Bb m(maj11)/Ab chord

How to play the Bb m(maj11)/Ab chord

Play Ab as the lowest bass note in the left hand
Find Bb (Root) on the piano keyboard
Add Db (Minor third) — 3 semitones above Bb
Add F (Perfect fifth) — 7 semitones above Bb
Add A (Major seventh) — 11 semitones above Bb
Add C (Major ninth) — 14 semitones above Bb
Add Eb (Perfect eleventh) — 17 semitones above Bb
Press all 7 notes simultaneously to sound the Bb m(maj11)/Ab chord