I'm a Loser was considered for release as a single until a track was written that featured the first uses of what in populer music?
I Feel Fine "I Feel Fine" is a song written by John Lennon (credited to Lennon–McCartney) and released in 1964 by the Beatles as the A-side of their eighth British single. The song has one of the first uses of guitar feedback in popular music.
Caroline, No "Caroline, No" is a song written by Brian Wilson and Tony Asher. It marked Wilson's solo debut when released as a single in March 1966, peaking at number 32 on the "Billboard" Hot 100. Two months later, Wilson's recording reappeared as the final track on the Beach Boys' studio album "Pet Sounds".