With How To Train Your Dragon: The Hidden World, director Dean DeBlois completed his trilogy of films for DreamWorks Animation, based on the book series by Cressida Cowell. Like its two predecessors, it was a financial success for the studio, grossing $520 million worldwide. Once again, DeBlois turned to John Powell to provide the musical narration.

This time, instead of relying heavily on existing music, Powell wrote a plethora of new themes, including one for the rumoured Hidden World and t...