Keith Jarrett is a jazz pianist who also plays classical concerts as well as more mainstream popular music. The first Jarrett record I bought was not jazz but the music of the Estonian minimalist composer Arvo Pärt.
I have included the recording of Fratres with Gidon Kremer on violin and the contrast with the first video of an improvised blues is striking as well as illustrating the breadth of Jarrett's talent and musical explorations.
Sadly he has been unable to perform since suffering a stroke in February 2018. A second stroke, in May 2018, left him partially paralyzed and unable to play with his left hand.