Dmaj7/C Piano Chord
Dmaj7/C is a D Major 7th chord played over a C bass note. C is not one of the notes of D Major 7th (D – F♯ – A – C♯), so Dmaj7/C is an added-bass (true) slash chord — the bass adds a new colour underneath the chord without changing the notes on top.
The dark key is the bass note (C); the coloured keys are the D Major 7th chord tones.
Notes in Dmaj7/C
Low to high: C (bass) , then D – F♯ – A – C♯.
How to play Dmaj7/C
Play the bass note C low in your left hand, and the D Major 7th chord (D – F♯ – A – C♯) in your right. Keeping the chord shape familiar in the right hand and just changing the bass is what makes slash chords easy to read and play.