Listen: NKOTBSB Release First Single, 'Don't Turn Off The Lights'

Old Men On The Block and Backstreet Seniors prepare For "Dick Clark's New Year's Rockin' Eve With Ryan Seacrest 2011." We kid -- you guys look as youthful as ever!

Before their joint tour kicks off in June, the combination of boy bands Backstreet Boys and New Kids on the Block, better known as NKOTBSB, have officially unveiled their collaborative sing, "Don't Turn Off the Lights." The song is the boy bands' first original track since they began performing together last year.

"Lights" manages to mix in the vocals of both groups with the uptempo beat, forming a sunny electro-pop hook. Fans were first given a glimpse of the track in December, when the groups performed the track on a cruise ship.

New Kids on the Block and Backstreet Boys, who played a handful of their biggest hits during a performance at the American Music Awards last November, start their summer trek on May 25 in Rosemont, Ill.