My Songs Know What You Did in the Dark (Light Em Up) is a song from Fall Out Boy's fifth studio album, Save Rock and Roll. Released as a single on February 4, 2013, the lyrics and music were written by Patrick Stump, Pete Wentz, Joe Trohman, Andy Hurley, Butch Walker, and John Hill.
Music Video Edit
The music video for the song is the first of the Young Blood Chronicles, a series with the band filming a video for every song on Save Rock and Roll. It begins late at night, with a figure - later revealed to be rapper 2 Chainz - walking away from a black van parked in a forest clearing. He starts a bonfire by pouring gasoline over a wood pile and lighting it up with a match. Two women then exit the van, carrying various music instruments belonging to Fall Out Boy which the band members then toss into the fire. Among the items they throw in are the band's guitars, a bass, drumsticks and various drums and cymbals. They also throw in amplifiers and Fall Out Boy records such as Take This To Your Grave, From Under the Cork Tree, and Live in Phoenix, along with a Fall Out Boy wristband and Fall Out Toy Works comics. 2 Chainz then uses a flamethrower to speed up the incineration process, while the women return to the van and open its rear doors, revealing four hooded, bound men that are implied to be Fall Out Boy themselves. The camera then closes in on 2 Chainz's face as he holds up a match and stares at the band menacingly, ending the video.
Fall Out Boy's capture is shown in the music video for the following single, "The Phoenix", released on March 25, 2013.