Pink Floyd is releasing a 1966 version of 'Interstellar Overdrive' "running at close to 15 minutes long," according to Legacy Recordings' March 20th press. "The original recording was done at the Thomson studio in Hemel Hempstead, Hertfordshire on November 31, 1966, before the band were signed to EMI," the statement reads.
Pink Floyd’s managers at the time, Peter Jenner and Andrew King, recall the Thompson Private Recording Studios session in David Parker’s book "Random Precision: Recording the Music of Syd Barrett 1965-1974."
Andrew King: “I remember going down to this funny little studio, which was sort of in the back bedroom of this guy’s house down in the sort of High Wycombe way. Buckinghamshire or somewhere. And he turned out to be rather a nasty piece of work, but at the time it was pretty exciting. “
Peter Jenner: “It was pretty primitive, I would think it was only stereo, I would imagine it was 2-track, and then bounced from track to track if anything needed to be bounced. It wouldn’t have been 4-track, it wasn’t that advanced. It might have only been mono with two machines, I don’t know. I mean for us then it was lots of wires and microphones and cables and things, it was ‘a studio’ you know… Basically it was in someone’s front room sort of thing. I don’t know where we got hold of the guy, I can’t remember how we found him, or where, but there weren’t that many cheap studios around at the time… I think the thing that was interesting was ‘Interstellar Overdrive’, because that was a very good version of ‘Interstellar Overdrive’ because it was very ‘live’. It was as they played it live… All of the recording was probably done on single-track, live in the studio, with maybe a vocal overdub or something, going from machine to machine.”
To be clear, it can’t currently be said with absolute certainty that these two versions are one in the same (thus the asterisk in this article’s headline), but given the numerous known similarities detailed at the above link it’s as close to confirmed as can be at this point.