Due to its sunny Hollywood setting, HBO's The Idol has some pretty eccentric celebrity characters in its cast, however, the series' latest episode shows off an actual celebrity, Mike Dean, playing himself. The Idol tells the story of a struggling pop star, Jocelyn, who tries to revive her career by entering a dangerous relationship with a cult leader, Tedros. In The Idol episode 4, Tedros brings in producer Mike Dean to help Jocelyn record new music.
https://screenrant.com/the-idol-mike-dean-record-producer-cameo-explained/