Billboard Bits: New Katy Perry Song Leaks, Cee Lo Working with Gwyneth Paltrow
Billboard Bits: New Katy Perry Song Leaks, Cee Lo Working with Gwyneth Paltrow

It seemed that every big name in pop music was on hand for "GRAMMY Nominations Concert Live!!" hosted by LL Cool J last night (Dec. 1). And while everyone was there hoping to hear their name called in the list of nominees, quite a few were there to perform as well.

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Katy Perry got things started in her shimmering silver dress when she performed her summer blockbuster hit, "California Gurls."

Video: Katy Perry Performs "California Gurls"


Bruno Mars followed shortly after with a stripped-down performance of his solo hit "Just the Way You Are." Mars garnered the second most nominations of the night, despite the fact that his solo album "Doo-Wops & Hooligans" was released one week outside of the Grammy nomination window.

Video: Bruno Mars Performs "Just the Way You Are"


Billboard cover star and country sweetheart Miranda Lambert nabbed herself a record of the year nomination for "The House That Built Me," and also took to the stage to perform "Only Prettier" with her Pepto Bismol-colored guitar.

Video: Miranda Lambert Sings "Only Prettier"


Best New Artist nominee Justin Bieber gave an acoustic performance, with "Favorite Girl" on his acoustic guitar.

Video: Justin Bieber Performs an acoustic "Favorite Girl"


Rapper B.o.B and Bruno Mars both hit the stage twice last night, including performing their hit collaboration, "Nothin' On You."

Video: B.o.B and Bruno Mars Team Up for "Nothin' On You"


B.o.B came back out to perform "Don't Let Me Fall," from his debut album "The Adventures of Bobby Ray."

Video: B.o.B Returns to the Stage for "Don't Let Me Fall"


Train also hit the Grammy nomination stage with their biggest hit of the year, "Hey, Soul Sister."

Video: Train Performs "Hey, Soul Sister"


While Eminem, the leader of the nomination pack with 10, did not take the stage, the Grammy nomination audience was given a night full of 2010's catchiest and most successful singles.