Quote Originally Posted by Enkidoh View Post
The Ascian leitmotif is not Thunderer by Masayoshi Soken though, it's Without Shadow by Nobuo Uematsu - Thunderer is a generic battle theme used in a number of trial and even certain NM FATE battles (Behemoth comes to mind) which includes some Ascian battles, so that is probably the clue why Nightmare only has the generic mount theme The Rider's Boon.

It also seems that it's not quite as easy to change an individual mount's BGM to another track as it might appear to be so I'm liable to think that it's unlikely to occur.... but stranger things have happened.
Ooooh right I forgot that music. That would be even more epic.