They're always random…

…but not always quite this eclectic...

Taj Mahal - My Creole Belle
Donovan - Colours
Cassius Clay - Stand By Me
Guy Clark - L.A. Freeway
J.J. Jackson - But It's Alright
Jefferson Airplane - We Can Be Together
Tennessee Ernie Ford - Sixteen Tons
Alan Jackson & Jimmy Buffett - It's Five O'Clock Somewhere
Kris Kristofferson - To Beat The Devil
Kathy Matttea & Tim O'Brien - Gentle On My Mind

He was no Sam Cooke, but Ali could'a been a contender in the soul singer bracket if the beating people up thing hadn't worked out.