Helen Reddy
Host / Self

Wolfman Jack
Self / Host

Curtis Mayfield
Self / Host

Robin Gibb
Host / Self

Barry Gibb
Host / Self

Maurice Gibb
Host / Self

Gladys Knight
Self / Host / Self (as Gladys Knight & The Pips)

Chuck Berry
Self / Host

Billy Preston
Self

Edgar Winter
Self

Shawn Phillips
Self

Jerry Lee Lewis
Host / Self

José Feliciano
Host / Self

Wilson Pickett
Self / Host

Paul Anka
Host

Sly Stone
Self / Host (as Sly and the Family Stone)

Harry Chapin
Self / Host

Steve Martin
Self

Mac Davis
Host

Waylon Jennings
Self