The R&B singer Cassie gave uncomfortable testimony Tuesday during the sex trafficking trial of music mogul Sean “Diddy” Combs,” detailing allegations of physical abuse and control that included dayslong,

The singer, expected to be prosecutors’ star witness, took the stand in Sean “Diddy” Combs’ sex trafficking trial on Tuesday.

Cassie Ventura, the prosecution’s star witness in the sex-trafficking case against Sean “Diddy” Combs, told jurors Tuesday about taking part in weekly drug-fueled sex parties as her yearslong relationship with the music mogul turned abusive.