I Don't Know (Willie Mabon song)

"I Don't Know" is a 1952 recording by Willie Mabon and His Combo on Parrot Records (blues label) and Chess Records. Mabon's first chart hit, it reached number one on the US Billboard R&B chart in December 1952. Although the songwriting is credited to Mabon, the lyrics were derived from a Cripple Clarence Lofton tune.

Tennessee Ernie Ford issued the song as a single in 1953.

Freddie King covered the song on his 1969 album My Feeling for the Blues.

In 1978, The Blues Brothers covered the song and released it on their live album, Briefcase Full of Blues.