I understand that it can't be done, I just fail to see the logic behind it. Healing Waltz description: Removes one magic induced ailment from a party member. Ok. So we know what that does. Now if you would take the time too reveiw our magic menu under songs. Yes songs are classified as magic. We would find Carnage Elegy and Battlefeild Elegy. Maybe you don't have both bard and dancer lved maybe you do. I don't know but last time I checked songs=magic.
So what exactly is the logic behind Waltz not being able to erase a magical song? Other than people nodding in agreeance I see no actual proof of logic. Therefore I can only assume it was just something neglected by SE.
That standard can't really be used, because SE was never unified in it's standard of magic in the first place. For instance:
Magic agro: Songs and Ninjutsu do not agro magic agro monsters. Therefore, it can be said they are not magic.
Colibri: Colibri mimics most magic, but does not mimic BLU magic, nor does it mimic the magic based bloodpacts of summons(like Blizzard IV), but will mimic a BLM's or SCH's Blizzard IV.
I'm sure there are other examples, but as you can see, SE never really was constant. They made different decisions based on what they thought would be good for balancing, not any strict rules. For whatever reason, they probably wanted WHM's ability to erase status effects to be stronger than DNCs, and decided songs were one of those effects. Same with Colibri mimicking, songs were probably added because elegy is strong and constantly used. Or maybe some other reason, who knows(besides the developers themselves) :P