Watch Series The Four Battle for Stardom Online at Couchtuner. FOX will team up with iHeartMedia on the new music competition series THE FOUR: BATTLE FOR STARDOM. Eight-time Grammy® Award-winning, multi-Platinum solo artist Fergie will serve as host, and Grammy® Award-winning musician, record producer and songwriter Sean “Diddy” Combs, record-producing hitmaker DJ Khaled, Grammy-winning recording artist and songwriter Meghan Trainor and record label executive Charlie Walk have joined the panel of experts. THE FOUR begins where most competitions end: with the four finalists. Four super-talented and fiercely competitive singers, chosen from their auditions by the show’s panel of music industry experts, will try to defend their coveted spots on the stage, as they are challenged individually by new singers determined to replace them. Each week, if any of the four are outperformed, they’ll go home and their challengers will take their place.