Making the Band is getting back together. Sean “Diddy” Combs and MTV are reteaming to bring back the iconic music-competition series for premiere in 2020. A global casting call begins today across all major social media platforms in the search for the next breakout superstar.

Making the Band premiered on MTV in 2002 with Combs at the helm, two years after the original edition that followed the founding of O-Town aired on ABC. The series quickly became a breakthrough concept in music and television that chronicled the real-life drama and intimate journeys of musical acts Danity Kane, Day26, Da Band and Donnie Klang. Under Combs’ tutelage, MTV’s Making the Band changed the game for the musi-competition genre, creating some memorable and buzzed-about pop culture moments.

Earlier this week, Grammy-winning artist and business mogul Combs set off a social media firestorm by suggesting the idea of the show’s return, prompting...