Grammy award-winning rapper Kid Cudi is expected to testify in the federal trial against Sean “Diddy” Combs on Thursday in what could prove to be a pivotal moment for prosecutors.

Sean “Diddy” Combs could be sent to prison for life if convicted at his trial on federal sex-trafficking and racketeering charges, which started May 5 in New York.

Kaplan told jurors about the elaborate process of setting up hotel rooms for Combs to participate in what prosecutors allege were drug-fueled sex parties called "freak offs" and how Kaplan personally...