Battle of the BGMs

[Denmark]

Yoko Shimomura - Beware the Forest's Mushrooms (Super Mario RPG)

Hiroki Kikuta - Fear of the Heavens [opening theme]
Hiroki Kikuta - Monarch on the Shore [Tasnica theme]
Hiroki Kikuta - Leave Time for Love [Mana Fortress theme]
Hiroki Kikuta - The Oracle [Dark Lich theme]
(all above from Secret of Mana)

Mega Man 2 - Crash Man
(also Wily 1 but Proto said that already because he knows what's up)

Nobuo Uematsu - Kingdom of Baron (Final Fantasy IV)

Nobuo Uematsu - Opening Theme
Nobuo Uematsu - Locke
Nobuo Uematsu - Kefka
Nobuo Uematsu - The Unforgiven [Cyan trying to save Doma, among others]
Nobuo Uematsu - Phantom Train
Nobuo Uematsu - Slam Shuffle [Zozo theme]
Nobuo Uematsu - Overture
Nobuo Uematsu - Aria di Mezzo Carattere
Nobuo Uematsu - The Wedding
Nobuo Uematsu - Grand Finale
Nobuo Uematsu - Mog
Nobuo Uematsu - Strago
Nobuo Uematsu - New Continent
Nobuo Uematsu - Gogo
Nobuo Uematsu - The Magic House
Nobuo Uematsu - Umaro
Nobuo Uematsu - Last Dungeon
Nobuo Uematsu - Dancing Mad
(Final Fantasy VI)

Mother 3 - Porky's Theme

Koji Kondo - Gerudo Valley (Zelda: Ocarina of Time)
Koji Kondo - Temple (Zelda II: The Adventure of Link)
Koji Kondo - Tal Tal Heights (Zelda: Link's Awakening)
Koji Kondo - Dragon Roost Island (Zelda: The Wind Waker)
Koji Kondo - Hidden Village (Zelda: Twilight Princess)
Koji Kondo - Easton Kingdom (Super Mario Land)
Koji Kondo - World 1-1 (You have to know this.)

Super Metroid - Lower Norfair (Ridley's Lair)
Metroid Prime - Magmoor Caverns

Tetris - Type A

Okay, I'm done.