Lady Gaga does her best Beyonce impression in the extended remix for "Video Phone," appearing on the deluxe edition of I Am…Sasha Fierce (out 11/23 via Sony). Check out the video below!

After jumping onstage during Taylor Swift's acceptance speech at tonight's MTV Video Music Awards and loudly proclaiming that Beyonce deserved the award, Kanye West says he's sorry.

The music world -- and the world at large -- has been mourning Thursday afternoon's unexpected death of Michael Jackson. Via Twitter, Facebook, MySpace, and more, some of music's biggest stars are honoring the King of Pop. Here's what they had to say:

Tuesday, January 20, Barack Obama will be inaugurated as President. And what better way to celebrate his arrival than with some great concerts?

As Barack Obama's historic presidential inauguration draws near, so do the many celebrations planned in his honor. The biggest of them all: The inaugural kick-off concert at Washington, D.C.'s Lincoln Memorial Sunday, January 18, which features performances from some of music's biggest stars.

With the presidential campaign entering its final stretch, a cavalcade of hip-hop royalty turned out Monday in North Philadelphia -- the biggest city in one of this election's key swing states -- to get out the vote for Democratic nominee Barack Obama. Jay-Z, Beyonce, Diddy, and Mary J.