The Holladay Sisters were instrumental in the rockin’ soul sound of the late sixties and seventies. In 1967 Mary Holladay began recording as a back up singer in Muscle Shoals Alabama. She sang at the renowned R& B recording center and recorded at Quinvy, Fame, Broadway Sound, & Muscle Shoals Sound as well as American Sound in Memphis, Tn. and Atlantic Records Studio in New York. During this time she backed up Etta James, Dionne Warwick, Ella Washington, Merrilee Rush, Persey Sledege, B.J. Thomas, Joe Simon, Joe Tex, Clarence Carter, The Box Tops, Roosevelt Greer, Bobby Womack, James Purify & Ben E. King.

They recorded in 1969 with Elvis on the American Sound Sessions in Memphis which produced such hits as Suspicious Minds, In The Ghetto and Kentucky Rain.