During the 70's, there was no "you-tube" to help you decide what records to buy,consequently, you depended on music reviews, or recommendations from other people; the music reviews could explain how I got all these ECM records.
I had gotten tired of buying "crappy" records I didn't like by known artists even; it was a real crap shoot, because you couldn't take records back. That's when I began going with what I had heard, or the most consistent artist. Santana was certainly consistent, and sometime he included known jazz artists, like Alice Coltrane, but today I'm more in the mood for something more current by Santana; like "Blues For Salvador".
https://www.youtube.com/watch?v=6xxr3-CBams&list=PL5wKk_oSFx1VL0aYDSHiOSOSRtQikam9Y&index=2 https://www.youtube.com/watch?v=AVeFsfOwCa8&list=PL5wKk_oSFx1VL0aYDSHiOSOSRtQikam9Y&index=5Santana was a heck of a lot more consistent than jazz at that time; I had spent too much money for saying WTF after the first cut.
Enjoy the music.