Beyonce Knowles lyrics

Superstar Beyonce kicked off 2011 with a stellar performance at the grand opening of the Las Vegas' resort "The Cosmopolitan" on Friday. Watch in the video above the R&B-pop diva SINGING her hit "Halo" - with Chris Martin (of Coldplay) playing the piano.

R&B star Beyonce has premiered the music video for "Why Don't You Love Me" on Tuesday. The Jim Jonsin-produced track is being released as a buzz single for the Bee fans in the world as a way to promote the upcoming release of the "I Am..." Tour DVD (concert edition).

Jay-Z was the main act at the Coachella Valley Music and Arts Festival in Indio, California on Friday. When performing his hit single "Forever Young", the rapper surprised gig-goers by bringing onstage wife Beyonce so they could do the song together.

R&B songstress Alicia Keys took her "Freedom" Tour to NYC's Madison Squared Garden on Wednesday night. When performing "Put It In A Love Song", Ms Keys surprised concert-goers by bringin' onstage none other than Beyonce to accompanny her singin' her hot collaboration.

You have probably already seen the music video for Beyonce's new single "Videophone" which features Lady Gaga but now you can watch the behind the scenes footage. Kudos to Gaga for learning the choreography in little time. They really had a great time working together.