It was 1978, and nearly a decade into their recording career, Kool & the Gang - the once-dominant jazz and funk group whose biggest hits propelled clubs all over the world - were at a low point. Their last two albums had been duds,

Chappelle sang and and told jokes while Mary J. Blige rapped at the bash that brought out guests including Common and Jennifer Hudson.

Sammy Hagar was on hand to induct the band Foreigner. Kelly Clarkson joined in for a performance of the band’s 1984 hit “ I Want to Know What Love Is ,” and Demi Lovato, Slash and drummer Chad Smith from the Red Hot Chili Peppers played “ Feels Like the First Time ” (1977).