A type of Functional Magic that works via music: playing a certain song or a magical instrument that causes a spell-like effect to happen. This may have derived from the premise of there being legitimate power within the words one uses, which is somewhat akin to true name magic in this regard. A Wandering Minstrel, Magical Flautist or Music Meister may have this as their main method of fighting. The Musical Assassin uses a particularly nasty variant. Often shows up as a kind of Mind Control, or also commonly it can buff allies in a justified Theme Music Power-Up.