My Songs Know What You Did - Fall Out Boy

"My Songs Know What You Did in the Dark (Light Em Up)" is a song written and recorded by American rock band Fall Out Boy, released as the lead single for their fifth studio album, Save Rock and Roll. It serves as the band's first single following their 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 band felt that the song best represented their album at its core.