Trae Patton/NBCMariah Carey is joining The Voice starting next week.
The diva will serve as a key advisor for Season 15…

Trae Patton/NBCMariah Carey is joining The Voice starting next week.
The diva will serve as a key advisor for Season 15…
ABC/Lou Rocco
Rihanna will serve as a guest adviser on The Voice during the knockout rounds Monday night on NBC.
In prom…