Good Day Sunshine
- Paul McCartney – vocal, bass, piano, handclaps
- John Lennon – harmony vocal, handclaps
- George Harrison – harmony vocal, handclaps
- Ringo Starr – drums, handclaps
- George Martin – piano solo
Good Day Sunshine is a pleasant, optimistic song, written principally by Paul McCartney for the Revolver album (released in 1966). Recording took place on June 8, 1966 at the Abbey Road studios. (Overdubs were added on June 9.) Paul sang the lead and played both bass and piano. Ringo was on drums. Lennon and Harrison contributed harmony vocals on the chorus but apparently did not play guitar on the track. George Martin performed the piano solo. Similar to the song She Said, She Said, the voices engage in an imitative round at the end. McCartney said he was influenced by the Lovin' Spoonful in writing and arranging Good Day Sunshine, and it does remind one of their big hit, Daydream. This song has received praise from the likes of Leonard Bernstein (who admired its structure) and music critic Ian MacDonald, who said the song showed off the Beatles "at their effortless best."