John Coltrane June 28, 1965
According to the Reference Book, there's been a lot of confusion regarding the tracks: namely, which was actually the first take, versus what was labeled as such; and whether both takes are one continuous performance or not. Suffice to say there is some controversy, and for further reading please see the original source. Basically, though, Ascension is really one continuous composition in a free-form. There are two 'editions', or "Ed. 1" and "Ed. 2", but because of their free nature, it would be incorrect to say one is the 'alternate take' per se, unless we just want to say that the one released afterwards is necessarily the 'alternate take'. However, it's not the alternate in the sense of a normal composition would be. Likewise, Part 1 and Part 2 are part of the same take, but because they encompass two sides of an LP when released, they got chopped up, it seems.