I know how your feel, I experienced the same thing when getting into Jazz . So what I did was listen to some of his recordings that I knew the melody and then listened to Johns version. Although he is pretty much all over the map when he plays and how he interprets the song, one can still appreciate the way he does it. What really got me into John was listening to Miles Davis Kind of Blue- a very basic Jazz lp that everyone, at any level of Jazz can listen to and get into.. I never get tired of listening to that album!
Happy listening!!
Happy listening!!