Prometheus the Fire-Bringer Prometheus the Fire-Bringer Prometheus the Fire-Bringer (Ancient Greek: Προμηθεὺς Πυρφόρος, "Promētheús Pyrphóros") was probably the final play in the "Prometheia" trilogy traditionally ascribed to the 5th century BC Greek tragedian Aeschylus. As conventionally reconstructed, this trilogy reimagines the myths of Prometheus found in Hesiod's "Theogony" and "Works and Days". In the first play, "Prometheus Bound", the Titan is chained to a rock and tortured for giving fire to humankind, as well as teaching them other arts of civilization. In the sequel, "Prometheus Unbound", the Greek hero Heracles kills the eagle that Zeus sent to consume Prometheus' regenerating liver every day,
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