Sorry for bringing this old thread back to the top, but hey, there's stuff on the first page of this forum from last year.
I think the music really depends on the mood. I think FMG by itself has no inherent tone by itself. But I've done some RP themes in both WoD and DND games with FMG in it that varied.
Very true; the mood can take on the full spectrum of the presenter's imagination.
I've always thought
Push It, by Garbage would be perfect for the more darkly seductive sequences. Not to mention Shirley Manson seems like an ideal subject for some FMG herself!
From the classical side of things, it's probably far too easy to use an overly dramatic piece. So I'll try to restrain myself.

For the triumphant birth-of-a-goddess type transformations, I'd propose
Pines of the Appian Way, from Ottorino Respighi's Pines of Rome. The first 2 minutes and 4 seconds of quiet orchestral pulsing can be excerpted as needed, to set the mood, but after that point, each individual orchestral beat should accompany an appropriately epic pulse of growth!
And for lushly beautiful transformations (imagine the whole thing filmed through a blur filter and rose lighting, if you must), I've never encountered a more beautiful piece than the first 5 minutes of
music from Scene III of Maurice Ravel's ballet Daphnis and Chloe. It was originally meant to describe a sunrise, but FMG tends to arouse the same feelings in me, so I hope Ravel would excuse my appropriation of his poetry.
