WMG: Jesus Christ Superstar

King Herod's Song (with the possible addition of Superstar) occurs in-universe, with the Translation Convention applied.
I could definitely see the Herod of this continuity writing a song specifically to mock the so-called "King of the Jews"/Christos, and most versions of the performance that I've seen (especially the 1973 film's version) have him doing choreography that barely makes sense even within the boundaries of the Musical World Hypothesis. As for Superstar, that takes place in a message from the afterlife (or in the afterlife, or something), and thus could be part of the awesomeness of heaven. Maybe God just likes to have music up there.