A Change is Gonna Come and Leaving This Town are the same song and not affiliated with Sam Cooke’s song or the latter one a Beach Boy’s.
It is a Canned Heat Jam created by band.
Bob “The Bear” Hite - vocals, harmonica
Alan “Blind Owl” Wilson - guitar, slide guitar, vocals
Harvey “The Snake” Mandel – guitar
Larry “The Mole” Taylor – bass
Adolfo “Fito” de la Parra – drums