Arcade Fire is the musical guest on Saturday Night Live tonight, and Tina Fey is the host. In this video, Arcade Fire do the Saturday Night Live promo spots with Tina Fey. They promise to let her play the triangle, they break out those famous masks, and she jokingly calls them Coldplay. Tonight is the SNL premiere of its 39th season. Check back tomorrow for the full SNL Arcade Fire performance and more here on Spacelab.