How do you play the C m7(#9)(no5)/A# chord?

To play the C m7(#9)(no5)/A# chord on piano, play the C m7(#9)(no5) chord (C, D#, 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 C m7(#9)(no5)/A# chord means a C m7(#9)(no5) chord with A# in the bass.

C m7(#9)(no5)/A#

Q: What notes are in the C m7(#9)(no5)/A# chord?

The C m7(#9)(no5)/A# chord uses the 4 notes of the C m7(#9)(no5) chord — C (Perfect unison), D# (Minor third), A# (Minor seventh) and D# (Minor tenth) — with A# played as the bass note in the lowest register.

The C m7(#9)(no5) chord consists of the C (Perfect unison), D# (Minor third), A# (Minor seventh) and D# (Minor tenth) notes, with A# as the bass note.

Piano keyboard showing the notes for a C m7(#9)(no5)/A# chord

How to play the C m7(#9)(no5)/A# chord

Play A# as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add D# (Minor third) — 3 semitones above C
Add A# (Minor seventh) — 10 semitones above C
Add D# (Minor tenth) — 15 semitones above C
Press all 5 notes simultaneously to sound the C m7(#9)(no5)/A# chord

Related chords with different root

C m7(no5)
C m7(#9)(no5)
D# 6(sus)

Related slash chords

C m3/A#