[riktoi]

Okay, I went through the effort of compiling info and sources for all of them (with some help from eze) and cleaning some of it up for consistency in writing and fixing some errors they might've had.
If you still see some errors (in song title or artist name) I'd appreciate if you fixed them. Though I'm pretty sure I proofread it accurately enough for it to not have anything like that.

Also, as a warning: some of the data for the V1's of the 4K dans are long gone and in the case of that not really being a problem it's probably for the best to get rid of the ones that do not have sources left. The ones being 1st Dan V1, 2nd Dan V1 and 4th Dan V1. Though if you do happen to have the songs (which there was no apparent recollection of) it might be possible to source them.

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-- osu!Mania 4K Dans --
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osu! thread: https://osu.ppy.sh/forum/t/304816

1st Dan (δ-1) V2
9nine - Cross Over [Medium] (Golgo13) - SMOC 8th
Ryu* - Second Heaven [4K Another] (Spy) - https://osu.ppy.sh/b/378316
ARM feat. Nanahira - Bakunana*Testroyer [MEDIUM] (Rinzler) - https://osu.ppy.sh/b/721999
Vospi - Reverence [Hard] (Side) - https://osu.ppy.sh/b/1006357

2nd Dan (δ-2) V2
Suzaku - VANESSA [4K HD] (Quick Draw) - https://osu.ppy.sh/b/467656
M2U - The Prince of Darkness [4K HD] (leqek) - https://osu.ppy.sh/b/392677
Camellia - Routing [Chickening's Hard] ([ A v a l o n ]) - https://osu.ppy.sh/b/983252
Colorful Sounds Port - ETERNAL DRAIN [Hyper] (Wh1teh) - https://osu.ppy.sh/b/1002503

3rd Dan (δ-3)
Rche - entelecheia [Hyper] (Starry-) - https://osu.ppy.sh/b/1018853
Transin - Soul Destructor [MX] (pporse) - https://osu.ppy.sh/b/530768
dj TAKA feat.AiMEE - True Blue [EXTREME] (ZZHBOY) - https://osu.ppy.sh/b/956012
Camellia as "Bang Riot" - Blastix Riotz [ADVANCED] (Fresh Chicken) - https://osu.ppy.sh/b/770124

4th Dan (δ-4) V2
OSTER project - Devilz Sacrifice (Fullerene-/Caliber) - Yolomania Vol. 3
Bach ft. West Village - Black Cloak Skeleton (porkypink) - Yolomania Vol. 3
XACKSECKS - Christraping Black Breakcore (MrTea) - Yolomania Vol. 2
Alex c. feat. Yasmin K. - Angel of Darkness (Leo137) - Yolomania Vol. 3

5th Dan (δ-5)
LeaF - Paraclete (ilikexd) - Nuclear Blast JS Awesome Bomb Filez 5
Ranzor - That Was Too Slow [Hayaku! Hayaku!] (Quick Draw) - https://osu.ppy.sh/b/499645
Helblinde - Grief and Malice [4K Kriemhild Gretchen] (Fullerene-/Caliber) - https://osu.ppy.sh/b/554655
Yuyoyuppe - AiAe [SC] (Fullerene-/Caliber) - https://osu.ppy.sh/b/421064

6th Dan (δ-6)
Camellia - Bangin’ Burst (Fullerene-/Caliber) - Yolomania Vol. 3
Hoshina Anniversary - Technodildo (MrTea) - Yolomania Vol. 2
A-Moe - Bagpipe (Rebound) - Rebound Dump Collection Megapack 1
Team Musical Masterpiece - M-A (IcyWorld) - Nuclear Blast JS Awesome Bomb Filez 4

7th Dan (δ-7)
Nishino Kana - Go For It!! (Golgo13/Sensationer) - Interesting Files Collection 2
Smiley vs. hi19hi19 - Destiny GAMMA (hi19hi19) - hi19hi19 Pack 2 - Dumps and Hard Stuff
Blitz Lunar - Mathsma Attack (Wiosna/Shoegazer) - Yolomania Vol. 2
niki - WAVE (Skwid) - Dump Parade

8th Dan (δ-8) V2
Nthonius - Trapce (Sensationer/Golgo13) - Interesting Files Collection 2
Terminal 11 - Reluctantly Accepting Temporary Overexhaustion (cetaka) - Hard Songs Megapack Volume 6
Hatsuki Yura - Kaguyahime (Skwid) - Skwid's Minipack
Cardboard Box - Brute Force (Fullerene-/Caliber) - Yolomania Vol. 2

9th Dan (δ-9) V1
BABYMETAL - Megitsune (Fullerene-/Caliber) - Yolomania Vol. 3
Dev/Null - Rave7 [Oni] (hi19hi19) - hi19hi19 Pack 2 - Dumps and Hard Stuff
Daiki Kasho - John Tanaka's Theme (Wiosna/Shoegazer) - Fullerene Shift
DJ Nanasaki - Unorthodox Red (debit13) - Yolomania Vol. 3

10th Dan (δ-10) V1
SHIKI - Rose Quartz (EGG) - Interesting Files Collection 2
Danny Baranowsky - Battle of Lil' Slugger (Staiain) - Nuclear Blast JS Awesome Bomb Filez 5
DJ Banzai - Disconnected Trance (GammaBlaster) - Hard Songs Megapack Volume 12
403 ERROR (xi vs. ZUMMER) - FORBIDDEN (Wiosna/Shoegazer) - Fullerene Shift

10th Dan (δ-10) V2
yst - the lost dedicated (Zyph) - https://osu.ppy.sh/s/224173
Fantom - Connect 1986 (IcyWorld) - Nuclear Blast JS Awesome Bomb Filez 4
The Ghost of 3.13 - Forgotten [Forgotten Collab] (Zyph/Shoegazer) - https://osu.ppy.sh/s/338665
403 ERROR (xi vs. ZUMMER) - FORBIDDEN (Wiosna/Shoegazer) - Fullerene Shift

Luminal (δ-★) V1
LeaF - Ikill (ilikexd) - hi19hi19 Pack 5 - Streams and Memes
DJKurara - Japanese Transformation (Quick Draw) - https://osu.ppy.sh/s/200238
siromaru - Conflict (Einar) - Einar Final
Yuyoyuppe - AiAe (Wafles) - Yolo Dumps 1

Luminal (δ-★) V2
ueotan - Mario Paint [Hyper] (Fullerene-/Caliber) - Fullerene Shift
Izayoi Sak - Blue Planet (Wiosna/Shoegazer) - https://osu.ppy.sh/s/322476
Tatsh - Image Material -VERSION 0- (cut) (Fullerene-/Caliber) - Fullerene Shift
-45 - G e n g a o z o [Oni] (Wiosna/Shoegazer) - Fullerene Shift

Tachyon (ε-δ) V1
Izayoi Sak - Blue Planet (Rebirth) - Hard Songs Megapack Volume 2
Anthony Donato - The Scales of Struggle (Staiain&Fullerene-/Caliber) - Fullerene Shift
Manabu Namiki - Tenshi (Fullerene-/Caliber) - Yolomania Vol. 3
Daiki Kasho & Jonathan Underdown - Day to Live (Wiosna/Shoegazer) - not available

Tachyon (ε-δ) V2
Dev/Null - Rave 7 [Edit] (hi19hi19) - hi19hi19 Pack 2 - Dumps and Hard Stuff
-45 - EXILE (snover) - doesn't exist anymore
incinerate - Purgatorium (Patashu) - Rebound Dump Collection Megapack II
LV.4 - Angel Dust (snover) - Timdam Snackpack

Tachyon (ε-δ) V3
t+pazolite with siromaru - Chambarising 1.2x (Evening) - Timdam Snackpack 2
DJ Sharpnel - Cyber Induction 1.4x (IcyWorld) - Nuclear Blast JS Awesome Bomb Filez 4
Camellia - shadows of cats 1.2x (Wafles) - Dump Parade
LV.4 - Angel Dust (snover) - Timdam Snackpack
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-- REFORM DANS --
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osu! thread: https://osu.ppy.sh/forum/t/597350

~ INTRO-1st ~
FirstMap: Nanamori-chu * Goraku-bu - Yuriyurarararayuruyuri Daijiken [EZ] (Lokovodo) - https://osu.ppy.sh/b/363817
SecondMap: Camellia - Ultimate Ascension [BASIC] (Fresh Chicken) - https://osu.ppy.sh/b/1018070
ThirdMap: Hommarju - Sounds of Summer [Beginner] (Shana Lesus) - https://osu.ppy.sh/b/771861
BossMap: Suzuki Konomi - Redo [Easy] ( R e m u r i n g ) - https://osu.ppy.sh/b/1101553

~ INTRO-2nd ~
FirstMap: Banshi - Kotonoha [Normal] (erlinadewi-) - https://osu.ppy.sh/b/1003655
SecondMap: Jeff Williams - This Will Be the Day [4K Normal] (arcwinolivirus) - https://osu.ppy.sh/b/360809
ThirdMap: O2i3 - Belly Flopper [NOVICE] (Ilham) - https://osu.ppy.sh/b/839155
BossMap: bbn - Identic Conflict [Normal] (S a k u r a) - https://osu.ppy.sh/b/564737

~ INTRO-3rd ~
Avenged Sevenfold - A Little Piece of Heaven (Renard) - Renard's MGD Favorites
TAG - Romancing Layer [Avalon’s MEDIUM] (AmiShici) - https://osu.ppy.sh/b/755764
Memme - Chinese Restaurant [Advanced Saucy Meatball] (ajeemaniz) - https://osu.ppy.sh/b/579717
S-C-U feat. Qrispy Joybox - anemone [4K Hyper] (Julie) - https://osu.ppy.sh/b/644701

~ 1st ~ [r-1]
ULTRA-PRISM - Miracle Chance (edited) (Golgo13/Sensationer) - SMOC 8th
marshmello - WaNt U 2 [HYPER] (erlinadewi-) - https://osu.ppy.sh/b/1092866
Porter Robinson & Madeon - Shelter [Loneliness] (Dellvangel) - https://osu.ppy.sh/b/1109940
t+pazolite - Tommorow Perfume (tpz Despair Mix) [ADVANCED Lv. 9] (Critical_Star) - https://osu.ppy.sh/b/1029990

~ 2nd ~ [r-2]
Dollscythe - Flashes [CS’ Hyper] (ZZHBOY) - https://osu.ppy.sh/b/1058771
Remo-con - Vermillion (edited) (HOBIT) - SMOC 8th
Yooh - Snow Storm -euphoria- (edited) [ADVANCED] (raediaufar) - https://osu.ppy.sh/b/674175
Colorful Sounds Port - Eternal Drain [Hyper] (Wh1teh) - https://osu.ppy.sh/b/1002503

~ 3rd ~ [r-3]
nao - Dimension Tripper!!!! [MX 'Purple Heart'] (Feerum) - https://osu.ppy.sh/b/869922
The Flashbulb - Kirlian Shores (cut) (James May) - James May Collection of Mildly Decent Files That Includes Weird As Fuck Songs Like Pepper Steak V1
Rche - Entelecheia [Hyper] (Starry-) - https://osu.ppy.sh/b/1018853
dj TAKA feat.AiMEE - True Blue [EXTREME] (ZZHBOY) - https://osu.ppy.sh/b/952616

~ 4th ~ [r-4]
9nine - Cross Over (Golgo13/Sensationer) - SMOC 8th
hyi - Ephemera (rCaliberGX/Fullerene-) - Yolomania Vol. 3
w_tre - Shannon’s Theorem (hi19hi19) - hi19hi19 Pack 4 - Modern Keyboardsmash
Alex c. feat. Yasmin K. - Angel of Darkness (Leo137) - Yolomania Vol. 3

~ 5th ~ [r-5]
r300k - Energy Flower 3007 [6236] (Wiosna/Shoegazer) - https://osu.ppy.sh/b/992415
Static-X - Brainfog (Fullerene-/Caliber) - Yolomania Vol. 1
dbk2 - The Devil Plays Dance Games (edited) (ilikexd) - Timdam Snackpack
DJ Noriken - Elektric U-Phoria (IcyWorld) - Yolomania Vol. 4

~ 6th ~ [r-6]
Dekatora - Sweet & Sweet Cherry X (Golgo13/Sensationer) - SMOC 8th
Terminal11 - The Bird’s Midair Heatstroke (cut) (samurai7694) - Rebound Dump Collection Megapack I
t+pazolite - Luv * Lab * Poison 22ate! (CBR/Choof) - Nuclear Blast JS Awesome Bomb Filez 5
Musical Masterpiece - M-A (IcyWorld) - Nuclear Blast JS Awesome Bomb Filez 4

~ 7th ~ [r-7]
GTS / feat Baby M. - Last Chance (Golgo13/Sensationer) - SMOC 8th
Niki - WAVE (Skwid) - Dump Parade
Cardboard Box vs. STereochan - WE EAT AT FIVE FIVE FIVE GUYS (ilikexd) - hi19hi19 Pack 3 - Popcorn Blast JS Buttery Snack Filez
Tina Cousins - Hymn (Leo137) - Yolomania Vol. 3

~ 8th ~ [r-8]
C-Clays - To The Limit (1.1x, cut) (Wh1teh) - Fennec Fantasy
Terminal11 - Reluctantly Accepting Temporary Overexhaustion (cetaka) - Hard Songs Megapack 6
Yu_Ashina - Trickstarz (1.15x) (hi19hi19) - hi19hi19 Pack 5 - Streams and Memes
DJ Myosuke - Anguish (cut) (Wiosna/Shoegazer) - April Singles

~ 9th ~ [r-9]
Jessica Jay - Can’t take my eyes off you (Golgo13/Sensationer) - SMOC 8th
Igorrr - Cicadidae (Minty) - Minty Fresh Pack 1
DJ Banzai - Disconnected Trance (GammaBlaster) - Hard Songs Megapack 12
ueotan - Firmament Castle “Velier” (1.05x) (hi19hi19) - hi19hi19 Pack 3 - Popcorn Blast JS Buttery Snack Filez

~ 10th ~ [r-10]
yst - the lost dedicated (Zyph) - https://osu.ppy.sh/s/224173
DEV/NULL - Rave 7 (1.1x) (hi19hi19) - hi19hi19 Pack 2 - Dumps and Hard Stuff
YMCK - Oh Curry! (cut, 0.9x) (kaiten123) - Kaiten's Dumbstream Pack 2
Sia - Chandelier ~AoReDiT~ (_underjoy) - Yolomania Vol. 4

~ EXTRA-ALPHA ~ [r-α]
SAMBA MASTER -SATOH- - Dark Sambaland (Seiryuu) - https://osu.ppy.sh/b/1429732
U2 Akiyama - Odoru Mizushibuki (1.1x) (Wiosna/Shoegazer) - Yolomania Vol. 4
Jea - Makiba (ilikexd) - Fullerene Shift
Vaenus - Lazorbeamz (Evening) - Bad.End

~ EXTRA-BETA ~ [r-β]
Morimori Atsushi - Paradigm Shift (Hydria) - https://osu.ppy.sh/b/1165479
Izayoi Sak - Blue Planet (Wiosna/Shoegazer) - https://osu.ppy.sh/b/716961
The Queenstons - Amber Starlight, Don't Fall (cut) (IcyWorld) - Nuclear Blast JS Awesome Bomb Filez 5
Jeff Williams - Time To say Goodbye (feat. Casey Lee Williams) (Halogen-) - https://osu.ppy.sh/s/599257

~ EXTRA-GAMMA ~ [r-γ]
The Quick Brown Fox - Break (1.1x) (beary605) - https://osu.ppy.sh/b/1066057
Camellia - Fastest Crash (cut) (Wiosna/Shoegazer) - Timdam Snackpack
Hige Driver - Reflec Streamz (ATTang) - ATTangs Dumpmix
DJ Sharpnel - We Luv Lama (cut, 1.2x) (IcyWorld) - Nuclear Blast JS Awesome Bomb Filez 4

~ EXTRA-DELTA ~ [r-δ]
CROOVE - Aquaris (1.3x) (snoverpk) - https://osu.ppy.sh/s/633663
Studio EIM - Crescent Moon Island Boss Theme (1.05x) (Wiosna/Shoegazer) - https://osu.ppy.sh/b/1159593
DETRO - volcanicu (ATTang) - ATTang’s Bad Files
DJ Sharpnel - Future Dominators (cut, 1.3x) (IcyWorld) - Nuclear Blast JS Awesome Bomb Filez 4

~ EXTRA-EPSILON ~ [r-ε]
SHIKI - Rose Quartz (1.3x) (EGG) - Interesting Files Collection 2
The Ghost of 3.13 - Forgotten (1.4x) (Wiosna/Shoegazer) - Yolomania Vol. 4
ueotan - Mario Paint (Time Regression Mix for BMS) [D-ANOTHER] (Fullerene-/Caliber) - Fullerene Shift
plastic feat.Sakito - Hitsugi to Futago (1.25x) (snover) - https://osu.ppy.sh/s/516255

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-- Vibro Dan Courses --
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osu! thread: https://osu.ppy.sh/forum/t/551491

Various charters, most notable ones being Staravia and arpia97.
Dans 1-6: https://osu.ppy.sh/s/563163
Dans 7-12: https://osu.ppy.sh/s/564238