Sean “Diddy” Combs’ ex-girlfriend, Cassie Ventura, began what could be a days-long testimony in Combs’ sex trafficking trial Tuesday, alleging on the witness stand Combs had subjected her to physical abuse and coerced her to participate in “freak off” sex performances. (Here is a complete list of the allegations against Combs).

Ventura, a rhythm and blues singer known as Cassie, testified on Tuesday she acceded to participating for a decade in Combs' drug-fueled parties known as "Freak Offs," often fearful he could become violent if she didn't.

Prosecutors in opening statements called Combs a cultural icon to the public – but alleged he 'committed crime after crime' in private.