For the session, which was booked for two hours, Wood and Joe Boyd operated the mixing desk, while Whitehead and Stern were filming. This recording of the song lasted nearly 16-minutes in length, recorded onto a 4-track recorder in one take, as the band didn't want to have to play through the song again. The band then played another original instrumental, titled "Nick's Boogie". While 5 seconds of the band playing was included in Whitehead's "Tonite Lets All Make Love in London" film, edits of the recording was included on the film's respective soundtrack. The soundtrack (released in 1968) includes an edited version of the song and two reprises of it. The full version is available on the album "London '66–'67". While attempting to get the band a record deal, Boyd returned with the group to Sound Techniques studios. There, Boyd and the band recorded a demo tape which was to be given to various record labels, one of the songs that features on the tape was "Interstellar Overdrive". An early, unoverdubbed, shortened mix of the album's "Interstellar Overdrive" was used for a French EP released in July 1967. The 40th anniversary edition of "The Piper at the Gates of Dawn" contains two different, five-minute-long versions of the song, one of them being take 6 from 16 March.