So there's this video on YouTube: Here's playing some particular sort of jazz, and since I'm very new to jazz and have no clue how to learn about what he's doing I'm hoping someone here can help! BTW, I do know some of the straightforward theory bits like popular diatonic progressions using the standard ionian/aeolian. I know a bit about nondiatonic substitutions, normal things you can Google. That's just on paper though, my ear doesn't translate it that way yet. Anyways from the most basic, "it is this style of jazz", or, "listen to this artist because it's similar", or just straight up helping me on the theoretical approach. I'm really crossing my fingers on this one!! Hope y'all can help!