Lucy in the Sky by Elton John is just that much better because he is so incredibly talented as a pianist and and songwriter from that perspective. He adds chords to fill in at the right places where The Beatles never did. The whole arrangement is just so incredible!
At the 3:30 mark is an excellent reggae style section. Nigel Olsson, Elton's durmmer stands out also, check at the 5 minute mark. EJ never released this on an actual album, it was on one of his greatest hits albums and John Lennon actually plays guitar and vocals in Elton's version. John Lennon is credited as Dr. Winston O' Boogie. (Winston was his 2nd name).
This is a picture of my 45 single and the B side was a song called "One Day at a Time" written John Lennon.
Check out the video: