Songs used in the hack. I don't have the exact info, only what is in the .txt files in many cases, but it was all originally on SMWCentral.net.

Known level music:
-Title Movie = Yellow Rose of Texas, 
	Original midi port by Don Carroll
	ported by Mapsking
-Patience is a ...? = Alfred Chicken: "Mr. Peckles' Bonus Room" by David Whittaker
-Secret Exit Room 7 = bomber man land (Do not have credits info)
-You Won! = FF4 - Mystic Mysidia by Nobuo Uematsu
	SMW adaptation by Kyoseron
-Secret Exit Room 1 = Rainbow Route (Kirby & The Amazing Mirror) - Andres
-Secret Exit Room 5 = Kirby's Block Ball: "Circus Tent" by Sukezo Ouyama, Ryoue Takagi
-Mapsking's Castle = CUSTOM - "Moderato Extravaganza!" - SNN
-Actual Level = Mother 3: Open Sesame Oil/Open Sesame Tofu a.k.a. the Wes Dance
	SMW adaptation by Kyoseron
-Warm-Up Level Yawn = Paper Mario - Shyguy Toybox, (MidiGuy)
-Secret Exit Room 2 = Pokemon B/R/Y - "Vermilion City"  - SNN
-Secret Exit Room 8 = Kirby and the Amazing Mirror - Radish Ruins (Supertails)
-Secret Exit Room 3 = PokemonSGC Goldenrod City "AQUA" FromJapan
-Secret Exit Room 6 = Tetris Attack: "Yoshi's Stage" by Koji Kondo, Yuka Tsujiyoko
-Secret Exit Room 4 = The Flame and Arrow from Rudora no Hihou
-Loser's House = WB Arrow Zone;#0 w245 t61

Overworld music:
-Tetris - Music A
	by Ice Man

P-Switch Music
-Lemmings Level 10
	ported by Mapsking
	
Other music in the hack (unsure where exactly)
-Pursuit ~ Cornered (Variation) 2001 (from Phoenix Wright : Ace Attorney)
	Original Composer : Masakazu Sugimori
	Port by Holy Order Sol
-Twinbee Rainbow bell Map 5a
-Sunny Fields - Composed by GPETRY
-Grassy sunshine Tocatta

There may be others, but I am not sure. Credits go to whoever made them, ported them, or worked on the music. If you know of anything specific not mentioned here, please let me know the music, and when it is used, and I will update this info.
-Mapsking