antimusical

Opposing or countering music.

This does become monstrously antimusical in one scene: when Tchaikovsky’s music, softly depicting the sleeping palace (my favorite passage of this composer’s entire oeuvre, with its beautifully muffled oboe melody suggesting how beauty ripens in sleep like a chrysalis), is turned into an epic battle for the poor passive Prince, conducted between the wicked Carabosse, with her ghoulish minions, and the Lilac Fairy, with her elves.

Of or pertaining to antimusic.