Listen to Prologue / I Jupiter, I Rex online. Prologue / I Jupiter, I Rex is an English language song and is sung by William Redfield and George Jongeyans-Gaynes. Prologue / I Jupiter, I Rex, from the album Out Of This World (Original Broadway Cast Soundtrack), was released in the year 2011. The duration of the song is 3:18. Download English songs online from JioSaavn.