I stand corrected. After listening to "Get Free" (which for a long time I didn't even realize was the same singer) "Fukuyama Fire" (on which he sounds...well, almost bloodthirsty), I figured it was a conscious decision on Fukuyama's part to sound more youthful and optimistic on the Fire Bomber songs. That said, the only Humming Bird album I have is "1.2.3," which sounds like the "great, lost Fire Bomber album," and not just because a few M7 songs get reworked for it...it really sounds like Basara is singing those songs. But I guess years of "Holy Lonely Light"-style screaming takes its toll on one's voice...
(On a somewhat related note, I FINALLY found Chie Kajiura's first album last weekend, and it really sounds like it could be a Mylene solo album, if she'd taken some LSD before arranging the songs...)
Back to Frontier, I agree with everyone who likes the "@FORMO" version of "What 'bout my star" better than Sheryl's, but I'm a sucker for songs that start slow and gradually speed up.