<Tr> <Th_colspan="2"> Music video </Th> </Tr> <Tr> <Td_colspan="2"> "My Songs Know What You Did in the Dark (Light Em Up)" on YouTube </Td> </Tr> <P> "My Songs Know What You Did in the Dark (Light Em Up)" is a song by American rock band Fall Out Boy, released as the lead single for the band's fifth studio album, Save Rock and Roll . It serves as the band's first single following the group's three - year hiatus and regrouping in early 2013 . The track and its music video were released on February 4, 2013 worldwide and February 5, 2013 in North America, to coincide with the official news of the band's reformation . The song impacted radio on February 19, 2013 . The band members felt that the song best represented their album at its core . </P> <P> The song's title and principal lyric originate from an unrelated 2004 demo by the band . Fall Out Boy performed "My Songs Know What You Did in the Dark (Light Em Up)" on Jimmy Kimmel Live! for the group's first post-hiatus TV performance on February 13 as well as on various TV shows throughout the entire year, and have extensively played it in acoustic version at radio interviews . Lead vocalist / guitarist Patrick Stump performed the song as a guest on Taylor Swift's Red Tour on July 13, 2013, and Swift guested in turn with Fall Out Boy on Victoria's Secret Fashion Show on November 13, 2013 . The song became a staple at several sports - broadcasting soundtracks that year . </P>

Who sings light it up i'm on fire