Overworld:
Mushroom Kingdom Meltdown Reloaded - Main Overworld 				Moose 					https://www.smwcentral.net/?p=section&a=details&id=34591
Super Mario 3D Land - Special World 8 (Remix)					RednGreen				https://www.smwcentral.net/?p=section&a=details&id=20533

Credits:
Rosalina's Peaceful Days 							GammaV 					https://www.smwcentral.net/?p=section&a=details&id=15643

Boss Song:
Kirby's Dream Land 3 - King Dedede						Nanako					https://www.smwcentral.net/?p=section&a=details&id=34615
Kirby Super Star - Boss Battle							DrAnas					https://www.smwcentral.net/?p=section&a=details&id=28624

SFX:
Super Mario All-Stars Soundtrack: Ultimate Edition 				LadiesMan217, Vitor Vilela, musicalman 	https://www.smwcentral.net/?p=section&a=details&id=18816

Levels:

They are written by number order. That doesn't appear on the game, but it should be easy enough to understand.

1-1 	The 11th Vanilla Level Design Contest - A Moment to Stargaze (Night) 		Pinci 					https://www.smwcentral.net/?p=section&a=details&id=23033
1-2 	The 9th Vanilla Level Design Contest - Night 					Dr. Tapeworm 				https://www.smwcentral.net/?p=section&a=details&id=36647
1-4 	Super Mario Bros. Wonder - Underground 						HaruMKT 				https://www.smwcentral.net/?p=section&a=details&id=35385
1-A 	Celeste - Golden Ridge (Golden Feather Mix) 					Wyatt 					https://www.smwcentral.net/?p=section&a=details&id=31881
1-3 	Super Peach World - Macchiato Nights 						TheGremlin 				https://www.smwcentral.net/?p=section&a=details&id=25636
2-1 	Mario Kart 64 - Kalimari Desert 						Fyre150 				https://www.smwcentral.net/?p=section&a=details&id=32782
2-3 	New Super Mario Bros. - Underground 						LadiesMan217 				https://www.smwcentral.net/?p=section&a=details&id=35814
2-A 	Super Mario 3D World - Sprawling Savannah 					EDIT3333 				https://www.smwcentral.net/?p=section&a=details&id=30136
1-5 	New Super Mario Bros. - Castle (Alternative) 					LadiesMan217 				https://www.smwcentral.net/?p=section&a=details&id=35810
2-2 	SMW Central Production 2 - Dance of Dehydration 				Moose 					https://www.smwcentral.net/?p=section&a=details&id=30760
2-4 	Trials of Mana - Raven 								qantuum 				https://www.smwcentral.net/?p=section&a=details&id=26020
2-5 	SMW Central Production 2 - Cult of Calamity 					CK Crash, Dark Mario Bros, Ruberjig 	https://www.smwcentral.net/?p=section&a=details&id=30763
3-1 	Moving Along 									0ne_bins211 				https://www.smwcentral.net/?p=section&a=details&id=39552
3-A 	Kirby's Block Ball - Stage 1 (KDL3 Remix) 					Pinci 					https://www.smwcentral.net/?p=section&a=details&id=8818
3-2 	Cloudy Beach 									Maxodex 				https://www.smwcentral.net/?p=section&a=details&id=17926
3-3 	Dark Blossom Cove 								Dispace 				https://www.smwcentral.net/?p=section&a=details&id=37654
3-B 	Super Mario 3D World - Beep Block Skyway 					Dark Mario Bros 			https://www.smwcentral.net/?p=section&a=details&id=37731
3-4 	Super Mario World 2: Yoshi's Island - Underground 				LadiesMan217, musicalman 		https://www.smwcentral.net/?p=section&a=details&id=38603
3-5 	Hollow Knight - City of Tears 							Maxodex 				https://www.smwcentral.net/?p=section&a=details&id=23647
4-1 	Hollow Knight - Greenpath 							Maxodex 				https://www.smwcentral.net/?p=section&a=details&id=27630
4-2 	Donkey Kong Country - Forest Frenzy 						Kevin 					https://www.smwcentral.net/?p=section&a=details&id=26702
4-A 	Mushroom Kingdom Meltdown Reloaded - Grassland 					Moose 					https://www.smwcentral.net/?p=section&a=details&id=34589
4-3 	Twilight Drive 									Dispace 				https://www.smwcentral.net/?p=section&a=details&id=37034
4-4 	Bowser Strikes Back - White Woods 						Jimmy 					https://www.smwcentral.net/?p=section&a=details&id=34523
4-5	Donkey Kong Country 2: Diddy's Kong Quest - Flight of the Zinger 		6646 					https://www.smwcentral.net/?p=section&a=details&id=16086
5-1	Kirby Super Star - Crystal Field and Mystery Paradise 				Fyre150 				https://www.smwcentral.net/?p=section&a=details&id=29007
5-2 	Super Mario Land 2: 6 Golden Coins - Athletic Theme 				Nyumi_996 				https://www.smwcentral.net/?p=section&a=details&id=39157
5-3 	already	Super Mario Bros. Wonder - Pipe-Rock Plateau (Underground) 		EDIT3333 				https://www.smwcentral.net/?p=section&a=details&id=39682
5-A 	New Super Mario Bros. - Mushroom Waltz 						LadiesMan217 				https://www.smwcentral.net/?p=section&a=details&id=35813
5-C 	What-A-Blast! - Stars and Rainbows 						Ruberjig 				https://www.smwcentral.net/?p=section&a=details&id=34822
5-B 	Kirby Super Star - Trees in the Depths of the Earth 				DrAnas 					https://www.smwcentral.net/?p=section&a=details&id=24082
5-4 	Touhou Fuujinroku ~ Mountain of Faith - Fall of Fall ~ Autumnal Waterfall 	Wakana 					https://www.smwcentral.net/?p=section&a=details&id=10374
5-5 	Kirby Super Star - Meta Knight's Theme 						Segment1Zone2 				https://www.smwcentral.net/?p=section&a=details&id=32209
6-1 	Snowboard Kids 2 - Starlight Highway 						Ahrion 					https://www.smwcentral.net/?p=section&a=details&id=33185
6-A 	Mario Pinball Land - Snowy 							Hazel 					https://www.smwcentral.net/?p=section&a=details&id=27894
6-B 	Super Ghouls 'n' Ghosts - Ice Forest 						imamelia 				https://www.smwcentral.net/?p=section&a=details&id=28674
6-2 	Super Mario 64 - Cool, Cool Mountain 						DrAnas 					https://www.smwcentral.net/?p=section&a=details&id=37467
6-3 	Mario Kart DS - DK Pass 							Gamma V 				https://www.smwcentral.net/?p=section&a=details&id=13957
6-A 	Kirby and the Forgotten Land - Abandoned Beach 					jneen 					https://www.smwcentral.net/?p=section&a=details&id=34796
6-4 	RPG Tsukuru 2 - Frozen Wasteland 						Fullcannon 				https://www.smwcentral.net/?p=section&a=details&id=25683
6-5 	Donkey Kong Country - Fear Factory 						HaruMKT 				https://www.smwcentral.net/?p=section&a=details&id=8865
7-1 	Mario Kart: Super Circuit - Sky Garden 						Giftshaven 				https://www.smwcentral.net/?p=section&a=details&id=17412
7-2 	Super Mario 3D World - Chain-Link Charge 					nununoisy 				https://www.smwcentral.net/?p=section&a=details&id=35201
7-3 	Tower of Heaven - Luna Ascension 						Nanako 					https://www.smwcentral.net/?p=section&a=details&id=19802
7-A 	Newer Super Mario Bros. DS - Cloudbolt Chasm 					Enderdavid_HD 				https://www.smwcentral.net/?p=section&a=details&id=32637
7-4 	Skyroads - Road 7 (Oktalyzer) 							Mirrordrill 				https://www.smwcentral.net/?p=section&a=details&id=33333
7-5 	Super Mario Galaxy - Gusty Garden Galaxy 					Michael Baublé 				https://www.smwcentral.net/?p=section&a=details&id=8852
7-6 	A Hat in Time - Windmill Peak 							Maxodex 				https://www.smwcentral.net/?p=section&a=details&id=23646
8-1 	Rednex - Cotton Eye Joe 							ass 					https://www.smwcentral.net/?p=section&a=details&id=40674
8-A 	Valkyrie no Densetsu - Theme of Lava Cave 					Masterlink 				https://www.smwcentral.net/?p=section&a=details&id=39981
8-2 	Donkey Kong Country 2: Diddy's Kong Quest - Forest Interlude 			Slash Man 				https://www.smwcentral.net/?p=section&a=details&id=7111
8-3 	Super Mario Odyssey - New Donk City (SMW Remix) 				Milon Luxy 				https://www.smwcentral.net/?p=section&a=details&id=25231
8-4 	Mario & Luigi: Partners in Time - Dark Dungeons 				Milon Luxy 				https://www.smwcentral.net/?p=section&a=details&id=23498
8-5 	Super Mario Galaxy 2 - Puzzle Plank Galaxy 					Giftshaven 				https://www.smwcentral.net/?p=section&a=details&id=18382
8-6 	Pokémon Black/White - Driftveil City 						bebn legg 				https://www.smwcentral.net/?p=section&a=details&id=38676
8-7 	Super Mario World 2: Yoshi's Island - Latin Island (Athletic cover) 		Wakana 					https://www.smwcentral.net/?p=section&a=details&id=13345
8-8 	Alcahest - Panakeian Temple 							Samantha 				https://www.smwcentral.net/?p=section&a=details&id=39216
S-1	Sonic CD (JP/EU) - Quartz Quadrant Zone (Present)				Blue Warrior				https://www.smwcentral.net/?p=section&a=details&id=7260
S-1	Sonic CD (JP/EU) - Quartz Quadrant Zone (Good Future)				Ultima					https://www.smwcentral.net/?p=section&a=details&id=17410
S-2	Kirby & The Amazing Mirror - Cabbage Cavern					Dippy					https://www.smwcentral.net/?p=section&a=details&id=25258
S-3	Super Princess Peach - Bopping on the Clouds ~ Giddy Skies 1 (Remix)		Hooded Edge				https://www.smwcentral.net/?p=section&a=details&id=32465
s-4	Kirby Super Star - Candy Mountain						Isikoro					https://www.smwcentral.net/?p=section&a=details&id=30071
S-5	Arcana - Draven's Valley Pass							Segment1Zone2				https://www.smwcentral.net/?p=section&a=details&id=39430
S-6	Super Mario Land 2: 6 Golden Coins - Star Maze					Lui					https://www.smwcentral.net/?p=section&a=details&id=8264
s-7	Wario Land 4 - Hurry Up!							Dippy					https://www.smwcentral.net/?p=section&a=details&id=21675
S-8	Super Mario Galaxy - Good Egg Planet (Bowser Strikes Back Arrangement)		Jimmy					https://www.smwcentral.net/?p=section&a=details&id=34517
S-X	Tower of Heaven - Surpassing Heaven 🪽 ~ Luna Ascension (Remix)			Hooded Edge				https://www.smwcentral.net/?p=section&a=details&id=37933