Pre Coasters, discovered by Johnny Otis. The bass voice is provided by Richard "Louie Louie" Berry. Jules Bihari (Modern) had Berry under contract and forced him do the sequel.
Richard Berry [sequel for Modern as The Big Break]
Elmer Bernstein [same sax riff in theme film The Man With The Golden Horn]
Beach Boys [as Students Demonstration Time]
Big Bill [as Fuif In 't Midden Van De Stad]
Little Charlie & The Nightcats [as The Big Break]
Rev Brown [as There's A Rumour Going Round]
Title inspired by that year's B-film Riot In Cell Block 11 (Don Siegel) starring Richard Berry incognito, using his Willie Mabon voice and all (see: I Don't Know).