This landmark album deserves a lot more recognition than it ever got. Recorded in 1956, around the time of Miles' "Round 'Bout Midnight" sessions, it features Coltrane with what would become the Red Garland Trio (Red, Paul Chambers, and Art Taylor), along with 3 of the great tenors of the time (4 if you count the bonus tracks with an entirely different band). This predates any of Trane's solo work away from Miles and Monk, so it's an important document for that reason alone. Of course, there's the music too, and it's mind-blowing. It's nearly 80 minutes long, and never lets up the whole time. The liner notes are outstanding, which is helpful in knowing who's blowing. I have a pretty good ear, but with 4 tenor saxes, it's hard to distinguish between them. Nevertheless, it's an outstanding album, and I highly recommend it. It should be in your collection.