How do you play the Bb maj7(no3)/C chord?

To play the Bb maj7(no3)/C chord on piano, play the Bb maj7(no3) chord (Bb and A) with C as the lowest bass note. Place the C note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What notes are in the Bb maj7(no3)/C chord?

The Bb maj7(no3)/C chord uses the 2 notes of the Bb maj7(no3) chord — Bb (Perfect unison) and A (Major seventh) — with C played as the bass note in the lowest register.

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 maj7(no3)/C chord means a Bb maj7(no3) chord with C in the bass.

Bb maj7(no3)/C

The Bb maj7(no3) chord consists of the Bb (Perfect unison) and A (Major seventh) notes, with C as the bass note.

How to play the Bb maj7(no3)/C chord

Play C as the lowest bass note in the left hand
Find Bb (Root) on the piano keyboard
Add A (Major seventh) — 11 semitones above Bb
Press all 3 notes simultaneously to sound the Bb maj7(no3)/C chord