Janet Jackson's much-anticipated collaboration with Missy Elliott has been building buzz with its debut in Janet's live show, and the studio version is finally here. "Burnitup!" is the first party track we've heard from Unbreakable — and while "No Sleeep" and "Unbreakable" are lovely, it's good to know the album's energy level is full of peaks and valleys, and not just one big quiet storm.

Janet's stage show, which rolls into Atlanta's Chastain Park Ampitheatre on September 26, has been opening with the new song, and Missy appears on a giant video screen behind her. Listen to "Burnitup!" below, and feel free to "dance like no one's watching":

“Working with Janet is unbelievable.  Although we are great friends and have been for so long, I am still her biggest fan,” Missy said in a statement on Janet's site. “Sometimes, I still have to pinch myself when I call her and she picks up the phone or texts me because she is still Janet Jackson! The superstar that I would run to the TV to watch her videos and dance moves, so for me I’m honored to be on any Janet record. I’m humbled whenever she asks because she inspires and continues to inspire me, always!”

“It is always great to work with friends and Missy is a dear friend," Janet echoed. "It was only natural for the two of us to record a song together." The two have previously collaborated, first on the remix of "Son of a Gun" and again on "The 1" in 2008. Watch the (great) video for "Son of a Gun" below.

 Janet Jackson's Style Evolution