The Weeknd and Little Big Town will also take the stage at the Feb. 15 show.
Biebs and Pitbull will join other big names like Adele, Kendrick Lamar, and The Weeknd.
Gaga claims the collaboration will "remind the world of the seed of innovation, the wizard behind the curtain, the mind behind the machine."
Not everyone got their fair share of recognition from the 2016 Grammys nominations. Who was most snubbed?
Taylor Swift, Kendrick Lamar and The Weeknd are popping up across categories.
"Joan Rivers: Can We Talk?" will be open from July through September in Los Angeles.
The dreams of three music-makers came true when the winners of 2015 GRAMMY Amplifier program were announced. Each winner will partake in a once-in-a-lifetime musical experience.
Taylor Swift is clearly the celebrity that keeps on giving, proven yet again by what she did for one lucky fan during the 2015 Grammy Awards.
Beyonce released a behind-the-scenes look at her 2015 Grammys performance and the meaning and thought that went into it, and, as always, we are insanely impressed.
It looks like people are still obsessed with Taylor Swift's love life, and she's still insisting on her lack of one.