I dunno about you, but I actually like both parts of Adelheid Bernstein’s theme in KoF 2k3. Though, the whole song deserves the nickname of “The King of Odd Transitions 2003,” IMO.
song name: Revolutionary Etude ~ RII (Mid Boss 1 [Adelheid Ver])
composers: Ayako Saso ft. Chopin
game: The King of Fighters 2003