VIDEO : Janet Jackson Opens World Tour With New Song Featuring Missy Elliott

Janet Jackson launched her world tour in Vancouver Monday night, and though her set was reportedly a hit-heavy 32 songs long, the show opened with a new Unbreakable track featuring Missy Elliott. When the track finally kicked in, Missy Elliott ? standing tall on two giant screens framing Jackson's silhouette ? let loose over punchy, shuffling production. Jackson then emerged taking center stage and control of the as-yet-untitled song, a propulsive pop number with a vocal performance that vacillated between sultry, smooth and casually fierce.