Be still, our '90s-boy-band-obsessed hearts: members of *NSYNC, Backstreet Boys, 98 Degrees, and O-Town collaborated on a new song together, and — god bless them — it's actually pretty catchy. The epic team-up is called "In the End" (not to be confused with Linkin Park's iconic classic [1]) and serves as the theme song for the made-for-TV zombie movie they're all starring in together, Dead 7 [2]. Thanks to the talents of the Backstreet Boys' AJ McLean, Nick Carter, and Howie Dorough; *NSYNC's Joey Fatone and Chris Kirkpatrick; 98 Degrees' Jeff Timmons; and O-Town's Erik-Michael Estrada, the pop song will no doubt fill your nostalgia quota for the month (maybe even the year). Listen to it above (or feel free to download it [3]!), and be sure to check out Carter's epic music video for his latest single, "19 in 99." [4]