Galavant: Stand up! It's a Rocky parody! - Analyzing the Greatest Training Montage in Spoof History by Dan Krynn

With all the musical numbers sung by the cast, this is probably one of, if not, the only song sung off screen, which is an odd direction to take, however, there are both story, and parody reasons for this choice.

This song is played at a point when Galavant is entered into a Jousting competition in order to build up funds. (Even with the huge gem in Isab…