Click http://www.mikesmusicroom.co.uk/chordbook.html to learn how to play minor seventh (m7) chords and download the complete piano keyboard chordbook which includes 12 major chords, 12 minor chords, 12 seventh chords and 12 minor seventh chords. Suitable for electronic keyboard, piano and organ.

The three keyboard chords in this video are:
Cm7 Chord
Gm7 Chord
Dm7 Chord

Keyboards For Beginners:
http://musical-instruments-uk.mikesmusicroom.co.uk/Keyboard-Piano/Electronic-Keyboards