Spy Kids: Mission Critical Season 1 Episode 3 Songs in the Key of Pain Episode Title:Songs in the Key of Pain.Episode Description:Carmen suddenly become so focused on trying to figure out exactly what the serum that they recovered from their first mission is, and how it's connected to Golden Brain, that she pushes a hyped-up Glitch away, especially since Glitch wants to spend some time with her. Things only get worse when Golden Brain hires DJ Otto Tune to capture the Spy Kids and Glitch falls right into his trap thanks to listening to a new hypnotic song that only teens can hear. Carmen will have to use her own sick beats to silence Otto's Hypnotic song before Glitch becomes his slave forever.