Dm7 chord for piano with keyboard diagram.
Explanation: The D minor seventh is a four-note chord and the four notes of the chord are marked in red color in the diagram. The chord is often abbreviated as Dm7 (alternatively Dmin7).
Theory: The Dm7 chord is constructed with a root, a minor third, a perfect fifth and a minor seventh.
Fingerings: Little finger, middle finger, index finger, thumb (left hand); thumb, index finger, middle finger, little finger (right hand).
Explanation: The piano chords pictured below are the three inversions of Dm7. Dm7/F is a D minor seventh with F as the bass note, Dm7/A is a D minor seventh with A as the bass note and Dm7/C is a D minor seventh with C as the bass note.