"I Can't Turn You Loose" is a song written and first recorded by American soul singer Otis Redding.
It was released as the B-side to his 1965 single "Just One More Day".
The up-tempo song became a bigger hit on the US R&B chart than its A-side and was one of Redding's signature songs and often appeared in his live performances.
Parts of the melody were used by the Blues Brothers to both open and close their shows, including their performances in the Blues Brothers movie and their performance on Saturday Night Live.