It would have been the summer of '74 . On a Friday night I heard a track from "Enlightenment" on Ted O'Reilly's "Jazz Scene" radio show. One Friday night a month his program was devoted to new releases. It knocked me out so much that I went to downtown Toronto the next day and bought a copy (either at Sam's or A&A).
Incredibly, a few weeks later, McCoy's "Atlantis" quartet played at the University of Toronto Convocation Hall and I eagerly attended. The sound was not great but I enjoyed the concert.
I also bought a copy of "Atlantis" when it came out, and then most of McCoy's Milestone LP's over the next few years. Since all my LP's, (save 100) have been sold, I don't have any of them anymore, though I do have "Enlightenment" and "Atlantis" on CD. I still enjoy them, but perhaps not as much now as when I first heard them.