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.
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.
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