so, i've been working on a mod that replaces the music in the game with music from Pokémon Ruby, Sapphire, Emerald, Firered, Leafgreen, Diamond, Pearl, Platinum, Heartgold, and Soulsilver.
so far i've done VS. Metal Sonic (Vs. Champion from Pokémon Diamond/Pearl/Platinum), Anticipation (Distortion World from Pokémon Platinum), The Speedway (Vs. Elite Four from Pokémon Ruby/Sapphire/Emerald), and VS. Fang The Sniper (Vs. Gym Leader/Elite Four from Pokémon Firered/Leafgreen.

plans for the mod:
VS. Black Eggman (Vs. PKMN Trainer Red from Pokémon Heartgold/Soulsilver)
VS. Dr. Eggman (Vs. Wild Pokémon from Pokémon Diamond/Pearl/Platinum)

if you have any ideas for what could replace what, then let me know by replying to this post!