Fall out boy performs My Songs Know What You Did In the Dark ( Light Em Up ) at the iheartradio music festival 2015.<br>Fall Out Boy perform My Songs Know What You Did In The Dark (Light Em Up) at Radio 1s Big Weekend in Norwich 2015. Visit the Big Weekend website at .<br><br>You may need to turn up your speakers for this one, sorry. I recorded remotely and couldnt hear how low the volume was. Setlist: 1:48 - Sugar Were Goin Down .<br>Fall Out Boy is joined by finalist Matt McAndrew on their hit Centuries. » Subscribe for More: » Watch The Voice Mondays & Tuesdays .
