What if each mount had unique music?

[Selli]

For the most part they do.

Primal ponies have all of their primal music now.
Chocobo companion and two-person mounts share music.
Fat Chocobos have their own music, which is different from the previous chocobo music.
Magiteck mounts also now have Terra's theme.
Beast tribe/unicorn/vet reward mounts all have a "general" mount type of music.

Basically aside from the chocobo and the general mount music, you have to earn the "special" music. But I actually quite like the general mount music.