VIDEO: 'Hollaback' - New Promo for THE VOICE with New Coaches Gwen Stefani & Pharrell Williams

The Voice returns to NBC on September 22, as new coaches Gwen Stefani and Pharrell Williams give Adam Levine and Blake Shelton something to holler about. Watch their new promo for Season 7 below!

ABOUT THE SHOW: "The Voice" returns with the strongest vocalists from across the country invited to compete in the blockbuster vocal competition show's sixth season. Celebrity musicians and coaches Adam Levine and Blake Shelton return, while Carson Daly continues to serve as host.

The show's innovative format features four stages of competition: the blind auditions, the battle rounds, the knockouts and finally, the live performance shows.

VIDEO: 'Hollaback' - New Promo for THE VOICE with New Coaches Gwen Stefani & Pharrell Williams