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Has anyone ever considered doing a Full Metal Alchemist with Flogging Molly's song Seven Deadly Sins.

Be perfect for a montage to the homunculi.

"Gimme the Prize" by Queen, also called The Kurgan's Theme from the Highlander Soundtrack.

Instead of looking for a relatively recent song, try backtracking a couple decades, or check a different genre of music.

Heck you'd be suprised the ideas you get by blowing the dust off & playing some old tapes.