I once tried a class were rider and horse had to literally perform to their song of choice. I rode my Shire Blizzard to Its My Life by Bon Jovi. She did spins, sliding stops, canter, trot, walk, rear, half passes etc; I tried to incorporate a little from western and english. This was a ridden test. Blizzard reared when the lyric was "for Tommy and Jenna who never backed down" and spun when the lyrics were "don't bend don't break." The class was a lot of fun, I placed first out of ten people who were riding horses far leaner then my Shire. It doesn't have to be as advanced, maybe walk trot and canter.