Arthur "Big Boy" Crudup (August 24, 1905 – March 28, 1974) was an American Delta blues singer, songwriter and guitarist. He is best known outside blues circles for writing songs such as "That's All Right" (1946), "My Baby Left Me" and "So Glad You're Mine", later covered by Elvis Presley and dozens of other artists.
Arthur Crudup was born in Forest, Mississippi. For a time he lived and worked throughout the South and Midwest as a migrant worker. He and his family returned to Mississippi in 1926. He sang gospel, then began his career as a blues singer around Clarksdale, Mississippi. As a member of the Harmonizing Four, he visited Chicago in 1939. Crudup stayed in Chicago to work as a solo musician, but barely made a living as a street singer. Record producer Lester Melrose allegedly found him while Crudup was living in a packing crate, introduced him to Tampa Red and signed him to a recording contract with RCA Victor's Bluebird label.
He recorded with RCA in the late 1940s and with Ace Records, Checker Records and Trumpet Records in the early 1950s and toured black clubs in the South, sometimes playing with Sonny Boy Williamson II and Elmore James. He also recorded under the names Elmer James and Percy Lee Crudup. His songs "Mean Old 'Frisco Blues", "Who's Been Foolin' You" and "That's All Right" were popular in the South. Crudup recorded "Mean Ole Frisco Blues", "Rock Me Mama", "So Glad You're Mine", "Who's Been Fooling' You", "That's All Right Mama" and "My Baby Left Me". These song were covered by many artists including Elvis Presley, Elton John and Rod Stewart.
Well, that's all right, mama
That's all right for you
That's all right mama, just anyway you do
Well, that's all right, that's all right.
That's all right now mama, anyway you do
Mama she done told me,
Papa done told me too
'Son, that gal your foolin' with,
She ain't no good for you'
But, that's all right, that's all right.
That's all right now mama, anyway you do
I'm leaving town, baby
I'm leaving town for sure
Well, then you won't be bothered with
Me hanging 'round your door
Well, that's all right, that's all right.