Решил составить список тех, кто делает ремиксы, каверы и фанатскую музыку. Я уверен, что он пригодится... как-нибудь.
К каждому постараюсь сделать небольшое описание, а если музыка хорошая, то выложить пример их творчества.
+NURSE
Пример: Cutie Mark Core (+NURSE Remix - No Vox)

achung818
Пример: "Hush Now, Quiet Now"

AcousticBrony
Пример: So Many Wonders (Rock Cover)

AddisonLea
Пример: My Little Pony: Friendship is Magic Theme (Guitar Cover)

AgileDash
Пример: Simple Joy Remix

AleatoireMixes
Пример: Avast Pinkie Pie's Ass
[YTPMV]

AllicornUK
Пример: Luna's Lonely Planet

alllevelsatonce
Пример: Winter Wrap Up ELECTROPOP REMIX

Annomaniac
Пример: Turn The Moon Around

AQuickAlias
Пример: Never Gonna Pony Up
[Mashups]

Arraitchgee
Пример: Cutie Mark Crusaders (Phineas and Ferb theme cover)

ArtAttack
Пример: TROT (Dubstep Remix)

Artemus
Пример: Pony Age (Act I)

AubadePrism
Пример: So Many Wonders

Aussie
Пример: Apple Skytree (Aussie remix)

Bagpipe Brony
Пример: I Will Rise

BBnGAR
Пример: Epic Sax Pony

Biff0r
Пример: Giggle at the Ghostie vs Fukkireta Mix
[Mashups]

BowenKainZ
Пример: RAINBOW Flash
[YTPMV]

BronyMike
Пример: Pinkazoid! TV Intro

catatonikC4T
Пример: Flutterrage

catmilly
Пример: Art of the Dress // My Little Pony Hip-Clop Cover

Chain_Algorithm
Пример: Chain Algorithm - Friends Forever Mix

Circuitfry
Пример: Derpy Hooves Bestof Rap

CJTheMusicDude
Пример: What Does Everypony Do?

clivo100 aka Clivey aka evilc
Пример: Giggle at the Ghostie - Instrumental

Connor Grant Pelkey
Пример: B.Y.O.P.

daksMusic
Пример: Cupcakes! (Pinkie Pie Instrumental daks Mix)

David Larsen
Пример: My Little Portal GLaDOS theme song

DavidReinold
Пример: Flight of the Wonderbolts (Remix)

dDiego117
Пример: Art of the Dress Hard Rock Cover

derpyderp910
Пример: Derp It Girl

DerpyGrooves
Пример: Scary Monsters and Cutie Mark Crusaders

Derpy Hooves
Пример: Lunar Eclipse [Luna's theme]

Dethonator
Пример: Friendship is Power Metal: Cutie Mark Crusaders Theme Cover

DJ Alex S
Пример: Luna (DJ Alex S remix)

DJAMAYAOFFICIALLIVES
Пример: WINTER WRAP UP (DJ AMAYA VS. GROOVEBOT EXTENDED VOCAL CLUB)

DJMidli
Пример: Brony Mix Vol 1 House/Electro/Dub

DJThunderCZ3
Пример: Winter Wrap Up (Radio Edit)

dietsodadude
Пример: Winter Wrap Up (Colt Version)

Doomwad765
Пример: Bronies Everywhere

Dr_Dissonance
Пример: Luna's Lament

Dr.Horse
Пример: Appleoosa Badlands

Dreamcloud
Пример: Into The Unknown

emmaeiou
Пример: Lighter Side of The Moon (Forgive and Forget)

Epicplatypus
Пример: I miss you (nightmare moon)

Eurobeat Brony, Bandpuffs
Пример: Art of the Dress

FiMFlamFilosophy
Пример: Pinkie P - Pie In the Sky

flashcode0
Пример: Winter Wrap Up Instrumental Transcription and Sheet Music

FoozogzPepperBrony
Пример: Avast Fluttershys Ascot

Galatube aka SandJosieph
Пример: Baked Bads

General Mumble
Пример: Ponystomp (20% Cooler Remix)

GeorgySviridoff
Пример: Fluttershy and Octavia: Evil Enchantress Jazz

Godash aka norris3942
Пример: FLUTTER
[YTPMV]

Hatesteed aka Joecoolman26
Пример: My Little Pony Friendship is Metal

Hirosashii
Пример: Me Without You

I38VWI
Пример: We Are: a CMC Orchestral Remix

iBringDaLULZ
Пример: Stuck Here on the Moon

ilysabeth
Пример: Fluttershys 20% cooler version - Fireflies Parody

infinitydash
Пример: Hot Sauce Cupcakes

Inizio
Пример: Shy

Interrobang Pie
Пример: Wily Invades Equestria

intrawl
Пример: Everyday I'm Pony'in

ISMBOF
Пример: Secrets and Lies (Psychotic Breakdown)

JackleApp
Пример: Giggle at the Ghostly (Ponyhouse Mix)

Jeffthestrider
Пример: No Strings Attached (Octavia Battle Theme)

KeepOnRockin'
Пример: Avast Fluttershy's Ass Remix

Kespainify
Пример: Myskinsoft Pony Remover
[YTPMV]

Kil
Пример: MLP FiM Main Theme 8bit RPG Battle

Kisuke
Пример: Trixie: A Star No More

Kleptzilla
Пример: It Has To Be A Curse

Laservega
Пример: Hot Night of Luna

Lenich
Пример: Cupcakes [Russian Version]

LesbianPonyArmageddon
Пример: Bitter

Makkon
Пример: Luna Deos

MarioInATopHat
Пример: Rainbow Tears
[YTPMV]

markingdude
Пример: Twilight's Sonata (d&b boss fight style)

megatfreak
Пример: Theme for Nightmare Moon and Luna

Memington
Пример: Cutie Mark Colossus - The Open Flank

MLPFiMAbridged
Пример: La Hooves - Muffinproof

MrCoffeeWings
Пример: Pinkie Pie's Parasprite Polka (Cover)

MrLomify
Пример: MegaMare 9 Staff Roll
[YTPMV]

MrYaridovich
Пример: Myomyomyomyomyomyomyon!
[YTPMV]

MusicalWolfe
Пример: My Little Pony: Friendship is Magic Theme Song - Note Blocks

MusicOfRusty
Пример: My Little Pony: Friendship is Magic Theme (Rock Cover)

MyMetalPonyTV
Пример: Into the Everfree

myusernamesmud
Пример: Evil Enchantress (fightan games mix)

NeonBrony
Пример: Winter Wrap Up Orchestrated

niftykoala
Пример: DJ Big Macintosh and Master Spike-Straight outta Ponyville

NightColtMusic
Пример: For Those Who Love The Night

NotACleverPony
Пример: For The New Lunar Republic

NRGFORCE
Пример: Friendship is Magic - Instrumental Medley

Overkillius
Пример: Derpy Hooves has 8 wings

penguindf12
Пример: So Many Cupcakes!!

Pinkamina Diane Pie
Пример: Not a Tree, Dashie!

PinkieCake
Пример: The Great and Powerful Wobble

PinkiePieSwear
Пример: Giggle at the Ghostly (Simple Joy Mix)

pkwinner02
Пример: Avast Applejack's Ass
[YTPMV]

ponyoxy
Пример: Everfree Cave Zone
[YTPMV]

prisonfishy
Пример: "Cupcakes" Horrorcore Rap Song

PsychedelicSagwa
Пример: Lazy Soccer - Round 6) Mega Mane 6 - Final Boss

Psychog13
Пример: x Critical Strike x - Winter wrap up (Chiptune KORG DS-10)

Pustulioooooo
Пример: Luna Deos (A Dreamt Hope Mix)

rabiesx86
Пример: Rock My Pony
[YTPMV]

RainbowCrash88
Пример: Art Of The Dress (8-Bit)

Rainbow Hash
Пример: Fluttershy's Exomix

Renard aka Kitsune
Пример: Rainbow Dash Likes Girls (Stay Gay Pony Girl)

Sadsic
Пример: Ponycast

sci
Пример: apple skytree

SenatorMyth
Пример: Sweet Apple Acres - Orchestral

SgtScrubnoob
Пример: Mega Mare
[YTPMV]

sgtwhp
Пример: Derpy Grooves Feat. BaldDumboRat & Invader Zim (DL content)

SherclopPones
Пример: Friday (Polka Version)

Silva Hound
Пример: Spitfire

SNN135
Пример: Night Crusaders

Soupy Derper
Пример: The Great and Powerful Battle Theme

Sparky
Пример: Dectalk Cupcakes

Spirit
Пример: Apple Skytree (Spirit Remix)

SqueakAnon
Пример: Luna's Night

Starbuck Mustang
Пример: The Secret Ingredient

Supersaw Hoover
Пример: gPrOeWaEtRaFnUdL

SuriOokami
Пример: MLP: So Many Wonders - Fandub

SWAGBERG
Пример: Pony Swag (feat. Maros)

Tai824
Пример: Winter Wrap Up

Tekaramity
Пример: Grand Galloping Gala

Tephrax
Пример: Pinkie Pie's Parasprite Polka - Minecraft Note Blocks!

Terawatt
Пример: This is My Jam

ThatKrystalFagget
Пример: Rainbow Gradius

thattagen
Пример: [MLP: FiM x Touhou] "Giggle at the U.N. Owen?!"

thattykins
Пример: Luna Goes All Stupid With The Evil

TheLuigifan007
Пример: Rainbow (Dash) Tylenol

TheSaltlakrits
Пример: Cupcakes in My Basement

tommy631
Пример: Surfing on a Rainbow
[YTPMV]

Tristan Toxique
Пример: Cupcakes

Turbo aka akfg4life
Пример: MLP:FiM - Winter Wrap Up [Bass & Drum Cover]

UgliStiK14
Пример: Winter Wrap Up Mario Paint

UnanimousDelivers
Пример: Night Of Pony
[YTPMV]

VanillaNapoleon
Пример: My Little Pony (Emm Ell Pees) vs Bee Gees - Gala Night Fever
[Mashups]

Versilaryan
Пример: At the Gala sheet music

Vinyl Scratch
Пример: Eyup [Big Mac's theme]

[voodoopony]
Пример: My Destiny is a Rock

Venetian Hooves (Bandcamp)
Пример: Me and my so called Ponies

WoodenToaster
Пример: Pinkie's Lie

XepherBeatM
Пример: My Little Pony Choral Medley

youman1996
Пример: Winter Wrap Up (Rock Cover)

zonic14game
Пример: fluttershy has an angry sparta remix
[YTPMV]

zorg
Пример: Cutie Mark Crusaders Theme (chiptune)
ThorTheGod
Может ещё заодно отобрать самые удачные произведения и выложить сюда? А то разгребать такую кучу не каждому захочется.
Филин
Кого из них ещё стоит описать?
ThorTheGod
По-моему, готово.
ThorTheGod