Persona 4 sits on a fine line here.
Man, I love Reach Out to the Truth, but I'll Face Myself is so damn good.
A lot of JRPGs have battle music that trumps boss music, usually because some RPGs have boss music that's even better than the generic boss music (SMRPG and Chrono Trigger, for example).
Gotta put up M&L:SSS. Dunno about the other M&L games, I don't remember their music as much. Tales of Symphonia, the Abyss, and Vesperia are all good candidates too.
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Rank 9, Dr. Peace? Pffft, nothing compared to Rank 1, Dr_Football!
when thinking of Krystal, does GMUN's pants get overcrowded? ~ GMUN