The sex-trafficking trial of Sean Combs kicked off Monday in New York federal court with prosecutors and the hip-hop mogul’s defense team clashing over whether he coerced his former girlfriends into drug-fueled sex parties or if they were willing participants in his swinger lifestyle.

Prosecutors allege Sean “Diddy" Combs orchestrated a 20-year pattern of abuse, sex trafficking, and violence with help from his inner circle.

Cassie Ventura, the former girlfriend of Sean “Diddy” Combs and one of his accusers, could take the stand as early as Monday as one of the first three witnesses called in the government’s sex-trafficking case against the music mogul.