Ok so here's what I have so far, the list doesn't seem complete, but I want your input on it before I finalize it and start working. This is not the final order of the pieces.
I - The Sound of Adventure
SMB - Overworld, Underwater
SMB 2 - Overworld
SMB 3 - Overworld, All world themes
SMW - Athletic
SMW 2 - Hop Hop Donut Lifts, Underground
SM64 - Bob-Omb Battlefield, Hazy Maze Cave
SMS - Delfino Plaza
SMG - Good Egg, Battle Rock, Gusty Garden
SML - Birabuto Kingdom
NSMB - Overworld
II - Move, Think, Fight!
SMRPG - Forest Maze, Mushroom Kingdom, Regular Fight
Paper Mario - Mario and Peach's Theme
PM2 - Glitzville, X-Naut Moon Base
SPM - Count Bleck's Theme, Flipside/Flopside
(I Need a few themes from each of the Mario and Luigi Games)
III - A Tale of Two Bros.
Luigi's Mansion - Main Theme
Wario Land 4 - Toy Block Tower
Yoshi's Story - Main Theme
Dr. Mario - Fever, Chill
Donkey Kong - 25m
(I'm open to a few more suggestions, but there's quite a bit I can do with these.)
IV - On Your Mark
SMK - Rainbow Road
MK64 - Rainbow Road, Lose Theme (mostly improv)
MKSC - Bower's Castle
MKDS - Waluigi Pinball
MP1 - Luigi's Engine Room, Eternal Star
SM64 - Slide Theme
SMRPG - Midas River
(Open to suggestions)
V - Bowser's Castle
SMB - Castle
SMB3 - Castle
SMW - Castle
SMW2 - Castle
SM64 - Koopa's Road
SMW - Bowser Fight
SM64 - Final Bowser
SM64 - Final Bowser
(Open to suggestions)