"I Feel Fine" is a song by the English rock band the Beatles that was released in November 1964 as the A-side of their eighth single.
It was written by John Lennon and credited to the Lennon–McCartney partnership.
The recording includes one of the earliest uses of guitar feedback in popular music.
The single topped charts in the United Kingdom, the United States, Canada, Ireland, the Netherlands, New Zealand, Norway and Sweden.
In the UK, it was the fifth-highest-selling single of the 1960s.