The Fire Thief (novel) chained to, by his cousin Zeus, the Greek god of lightning and ruler of the sky. Zeus sends him on a quest to find a true human hero. He gives Prometheus a ring because he promised that Prometheus will always be chained to that rock. This means that Zeus can always find him as well. Prometheus travels into the future with a pair of magical wings. He lands in Eden City and is helped by Uncle Edward and young Jim, a pair of robbers. The Fury is bent on revenge and Theus must complete this task while avoiding the Fury,
Chained to the Rhythm that contains a midtempo beat. Perry co-wrote the track with Marley, Sia Furler, and its producers Max Martin and Ali Payami. It has a length of three minutes and fifty-seven seconds. The song contains "slap bass" with elements of electric guitar and synths. It features a guest appearance from Marley and background vocals from Furler. According to the sheet music published by Kobalt Music Publishing America, Inc on Musicnotes.com, "Chained to the Rhythm" is in A minor set in a time signature at a moderate tempo of 95 beats per minute. Perry's vocal range spans from the low note B