"I Can't Let Go" is a song co-written by Al Gorgoni and Chip Taylor, who also wrote "Wild Thing".

"I Can't Let Go" was originally recorded by the blue-eyed soul singer Evie Sands on George Goldner's Blue Cat label, which was popular in New York City in 1965.

[3] The Hollies' version was praised by Paul McCartney, who thought Graham Nash's soaring tenor in the chorus was a trumpet.

"[4] After "I Can't Let Go" was recorded Haydock was replaced by Bernie Calvert, who played on the band's next single ("Bus Stop").

[5] Linda Ronstadt released the most successful American version in 1980 from her platinum-certified album, Mad Love.