"The Voice" fans were given a little sneak peek of what to expect in the upcoming season through a preview introducing some talented teens.

The special preview of season 11 which aired recently featured We McDonald and Darby Walker and treated fans to an awesome performance by the show's judges, including the two new mentors, Miley Cyrus and Alicia Keys.

The half-hour episode kicked off with McDonald taking her place behind the coaches and blowing all of them away with her a cappella version of "Feelin' Good."

Following her performance, the four judges performed a cover of "Dream On" by Aerosmith, with Alicia Keys kicking things off before Shelton and Levine. The crowd went wild as soon as Miley Cyrus stepped on stage and belted out the lyrics of the song with her raspy voice.

Towards the end of the show and following the judges' performance, the episode paid tribute to former "The Voice" contestant Christina Grimmie. The judges and the mentors took the stage for an emotionally charged tribute for the 22-year old alumna, who was shot to death in June while signing autographs for her fans after her solo concert in Orlando, FL.

The finale of the episode faded to black, with a card that read, "In loving memory of our friend Christina Grimmie."

Christina Grimme was a YouTube star who rose to stardom when she joined "The Voice" season 6 and made it to the top three, alongside Levine.

"The Voice" season 11 is set to premiere on Sept. 19, 8:00 p.m. on NBC.