This is one of my favorite piano players… he makes the piano seem so simple at times and at others is sounds as if he must have 3 hands to be able play all that he plays. When I first heard Keith Jarrett I wasn’t sure if I was listening to Classical music or Jazz.This recording is of him improvising in front of a live audience in Koln, Germany. It is just him and there is no overdubbing on the recording and no he doesn’t have 3 hands.
What are cool piano chords?
This is obviously objective but, in general you have the major chords which sound happy, the sadder sounding minor chords. Then you have the ambiguous 7th chords.
Now come the ‘cool’ chords. if you start adding the 9th, the 11th and the 13th to a chord then you start getting more jazz like sounds. The 13th chords even start to sound a little impresionistic and were used by Satie and Debussy.