Here you Will find a list of the original soundtracks in this hack, a playlist with the soundtrack will be uploaded once the hack is finished :).

OVERWORLD: Mario & Luigi: Partners in Time - Listen Up Now/Tutorial
UNDERGROUND: Mario VS Donkey Kong 2 - Magnet Mania
ATHLETIC: Mario Kart: Super Circuit - Sky Garden
UNDERWATER: Donkey Kong Country 2 - In a Snow-Bound Land
CASTLE & FORTRESS: Enemy Fortress (Original composition by Asprök)
AIRSHIP: Mario Kart DS - Airship Fortress
DESERT: Super Mario Maker 2 - Desert (Super Mario World)
GHOSTHOUSE: Super Mario RPG - Sunken Ship
OLDSCHOOL VILLAGE: Itadaki Street DS - Super Mario Bros ground theme (rearrangement by IllyCat)
SNOW OVERWORLD: Banjo-Kazooie - Freezezy Peak
BONUS ROOM: Mario Kart: Double Dash - Battle Stage
TOAD HOUSE: Totaka's Song
BOWSER JR. BATTLE: Kenichi: The Mightiest Disciple - Speed Up
BOSS: Mario & Luigi: Dream Team - Never Let Up
STARMAN: Yoshi Touch & Go - Powerful Infant
MEGA MARIO: Super Mario Land - Sky/Marine Pop
P-SWITCH: Super Mario Bros. 3 - Toad House
TITLE SCREEN: Mario & Luigi: Bowser's Inside Story - Title screen
WORLD 1: Mario & Luigi: Bowser's Inside Story - Have a Nice Talk!
WORLD 2: Mario Kart 64 - Kalimari Desert
WORLD 3: Mario Party - Yoshi's Thropical Island
WORLD 4: Donkey Kong Country - Bonus Room Blitz