Buzz Bites: (8/31/10): Lady Gaga Plays New Song Live

(Ethan Miller/Getty Images)

+ Lady Gaga unveiled an Elton-John-esque piano ballad, "Living On The Radio," live in Minneapolis, last night. (MTV News)

+ Watch Justin Bieber chug a glass of milk for the U.K.'s "Make Mine Milk" campaign. (Idolator)

+ Mariah Carey has sort of confirmed her pregnancy, much to the delight of husband Nick Cannon. (TheFabLife)

+ A new poster for the film "Burlesque" has dropped, featuring both Cher and Christina Aguilera. (NeonLimelight)

+ Kelly Rowland appeared on the "Today" show to help celebrate "Soul Train" 's 40th anniversary. (ThatGrapeJuice)