The red carpet was alive with the sound of music Saturday night at KIIS FM's annual Jingle Ball Concert.
Jason Derulo, Jay Sean and even LMFAO all stopped to sing exclusively for RadarOnline.com. Sexy Derulo belted out his hit a cappella "Whatcha Say" (only the hottest song on the charts right now) and enthused about video blogging exclusively for us from the Monster Ball concert with Lady Gaga! (Stayed tuned for the first blog from the tour.)
The entire Glee crew was in the house and drew screams every time one of the KISS-FM DJ's mentioned them, but the biggest response was saved for Taylor Swift who blew kisses to the crowd and slyly didn't mention a certain "werewolf."
When they weren't singing, the stars were telling RadarOnline.com what they wanted for the holidays!