However, John and Sir Elton’s collaborations were few but mainly consisted of the pair contributing their musical talents to each other’s work.
First, Sir Elton asked for his friend’s help on a Beatles cover, and in 1974 John helped Sir Elton form his version of Lucy in the Sky with Diamonds.
The B-side to this track was One Day at a Time, by John Lennon, and thus began a beautiful partnership.
Of course, John was not going to appear on the track in a normal way, and instead, he was credited as Dr Winston O’Boogie, with Winston being John’s middle name.
source: express.co.uk