Casandra Ventura testified that she was “humiliated” by marathon sex sessions that were fueled by drugs and orchestrated by Mr. Combs.

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

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,