Lady Gaga made a guest appearance on Tuesday night's finale of The Voice to perform her song, Do What U Want.

The NBC series is down to its final three competitors and, as the singing hopefuls wait for America's votes to trickle in, the competition is reuniting its past competitors and bringing in popular stars to pepper their fall finale.

Gaga teamed up with Coach Christina Aguilera for a battle of their vocal chops. The two pop stars drank champagne after singing the track from Gaga's 2013 release, Artpop.

Standing by during the performance were this season's Top 3 competitors. Following seven weeks of live performances and 26 episodes, only three of the original 20 competitors have managed to make it through battle rounds, knockout rounds, steals, saves, and eliminations. In the Finals are Will Champlin and Tessanne Chin of Team Adam Levine and Jacquie Lee of Team Christina Aguilera.

However, it still remains to be seen who will be dubbed the next Voice. Will it be the Jamaican solo artist, the Berkley School of Music graduate with a 1-year-old daughter, or the 16-year-old youngster? With Coach Blake Shelton out of the running, Coach Adam is hoping to snag victory for the second time.

Tags: Lady Gaga nbc The Voice 5 television Reality TV Music