Clark wrote or co-wrote many of the Byrds' best-known originals from their first three albums, including "I'll Feel a Whole Lot Better", "Set You Free This Time", "Here Without You", "You Won't Have to Cry", "If You're Gone", "The World Turns All Around Her", "She Don't Care About Time" and "Eight Miles High".
Gene Clark skrev eller bidrog til mange af Byrds' originale hits, herunder: "I'll Feel a Whole Lot Better", "Set You Free This Time", "Here Without You", "If You're Gone", "The World Turns All Around Her", "She Don't Care About Time" og "Eight Miles High".