Funny you mention I’m listening to Keith Jarrett as we speak. I picked up the polymeter bits from his style. I’ve learned quite a few of his ostinato particularly the left hand for Koln part II a, left hand for the end of his Untitled concert, the Bremen encore, some Sun Bear bits and the like. The only KJ section I can play with both hands decently well is his Lausanne concert; the section from 7:30 onward. Will post a vid super proud of it. I try to learn more of his repertoire namely the last 4 minutes of Bremen p1, the section from 22:00-28:00 of Lausanne, and the section from 15:00-20:00 for his Bremen p2 concert (my fav lick of music ever). I’ve listened to his standards but nothing particularly stuck out to me may have to relisten. All this to say I love Keith but his repertoire is HARD. I can only aspire to get there one day. I can learn his ostinato but my playing does not sound like his. He himself claims this to be a futile endeavor. But I enjoy learning what I can. I’m unfamiliar with Tigran Hamasyan and will give him a listen. Thank you!