1. Flames ~ David Guetta & Sia [Listen Here] This is the song when Lena and Kara are working out at the gym together.
  2. Really Gone ~ CHVRCHES [Listen Here] This is the big wrap up song played at the end of the episode!
  1. Save Me ~ Remy Zero [Listen Here] Plays when we arrive in Smallville!
  1. Killing Machine ~ Tony Crown [Listen Here] Plays at the end of the episode when Ben Lockwood is being taken to prison and Supergirl flies above watching.
  1. Grace ~ Rose Cousins [Listen Here] Plays at the end of the episode when James speaks with Lena
  1. What Lovers Do ~ Maroon 5 [Listen Here] Plays when Eliza tells Alex canned cranberries aren't as good.
  2. Just Tell Me ~ Nico Yaryan [Listen Here] Plays as the group at Thanksgiving discusses humans with powers and James' infiltration of the Children of Liberty.
  1. St Louis Elegy ~ Mark Lanegan Band [Listen Here] Plays at the end of the episode.
  1. On My One ~ Jake Bugg [Listen Here] Song featured at the end of the episode with Manchester Black setting up in National City
  1. Hero Sometimes ~ Nine One One [Listen Here] Song featured in the episode 404 trailer.
  1. Trouble ~ Derek Pitts and the Bullets [Listen Here] Plays when J'onn visits the alien bar to discuss how people feel about the President stepping down.
  2. A Little Honey ~ Nathaniel Rateliff & The Night Sweats [Listen Here] Plays when Brainy and Nia are at the Pizza Place.
  1. Trickster Blues ~ RF Shannon [Listen here] Plays at the alien bar when Kara apologizes to J'onn near the end of the episode.