Gym Class Heroes debuted new song "The Fighter" in collaboration with OneRepublic's Ryan Tedder who sings on the hook. Despite frontman's Travie McCoy "illness", the boys were able to perform live the "Stereo Hearts" with Maroon 5 on Saturday Night Live, same illness that forced GCH to cancel the rest of the dates of their Fall tour.

So, Travie raps about staying positive, no matter what your situation in life: "There's no reason you should ever have your head down/ Six foot five, two hundred and twenty pounds/ Hailing from rock bottom, Loser ville, nothing town/ Text book version of the kid going nowhere fast/ And now I'm yelling 'kiss my a—'/ It's gonna take a couple right hooks, a few left jabs / For you to recognize that you really ain't got it bad."

Whilst Ryan comes on the hook to let people know how to gain others' respect: "Give em hell, turn their heads/ Gonna live life til we're dead / Give me scars, give me pain/ They'll just say to me, say to me, say to me/ There goes a fighter, there goes a fighter."

Listen below to Gym Class Heroes' "The Fighter" feat. Ryan Tedder: