It's unlikely John Lennon had much of anything to do with recording George Harrison's second Abbey Road contribution. Lennon was still out of commission from his July 1 automobile accident when work began on this Harrison track on July 7 in Studio Two.
Thirteen takes were recorded until a "best" take was achieved. Drums, bass and two acoustic guitar tracks were recorded on this day. The following day saw the addition of a lead vocal and the "sun, sun, sun" middle-eight vocals, sung by Harrison and Paul McCartney and double-tracked. A reduction mix was then made to free up more tracks.
Recording continued over July and August with the addition of a harmonium (played by Harrison), drum overdubs, more electric guitar parts by Harrison, and George Martin's string and woodwind arrangement. On August 19, Harrison recorded his Moog synthesizer contribution, a signature element on "Here Comes the Sun."
Interestingly, the fluttery, wobbling sound on the Moog's reverb is the result of a studio trick employed on a few Beatles' sessions. The audio send to the reverb chamber was run through a tape deck with lengths of adhesive
editing tape on one of the rollers that guides the recording tape through the machine.
The sticky editing tape would catch and release the recording tape, causing fluctuations in pitch, which were then sent on to the reverb chamber and returned to be mixed with the original synthesizer signal. (The same effect was used to create the old-timey piano solo on the Sgt. Pepper's track "Lovely Rita.")
Musician/producer Alan Parsons, a tape operator on this and numerous other Beatles sessions, was responsible for overseeing the effect, though he was not a fan of it. "I hated the idea at the time," he says, "and I do to this day."
RECORDED: July 7, 8 and 16 and August 6, 11, 15 and 19, 1969, Abbey Road Studios One, Two