"I'll Feel a Whole Lot Better" is a song by the Los Angeles #folkRock band the Byrds, first released in June 1965 on the #Bside of the band's second single, "#AllIReallyWantToDo". Despite initially being released as a B-side, the song managed to chart in its own right in the U.S., just outside the Billboard Hot 100. It was also included on the Byrds' debut album, #MrTambourineMan and #TheByrdsGreatestHits. The song was written by band member #GeneClark.
https://www.youtube.com/watch?v=jYuIjpe-Ygc