My top 10 versions of NGAHHH!
Note that despite Soundcloud's numbering system, the #10 pick is actually the one below the original, and the #1 pick is at the bottom. That way it functions like a countdown.

Some rules apply as always:
1. The song has to be for an AU.
2. Covers and takes are allowed, remixes are not.
3. Only one entry per AU. For example, a song and a cover of that same song or alternate version for the same AU could not both be there.
4. Any variations of "!Underswap" (or !Underfell or whatever) all count as the base AU (i.e. Underswap). (Something like Integrity or Undertale: Swapped, however, could coexist on the list)

Slick's Top 10 AU NGAHHHs!!

Progreliters Masters Official SoundTrack

*Mij, Syntam, even Sir Siegfried...
*I know how they are.
*If you push the right buttons, they give up easily.
*Let's make it clear. That's not who you're dealing with now.
*I'm the strongest being in this joint.
*I'd say second strongest, but the Warden's getting old.
*He might still be stronger than me, but these days it's getting harder and harder to--
*Dangit, Todd! Don't get distracted!
*Let's get to the point.
*There's no way in heck you're getting past me.
*Not.
*A flipping.
*Chance.

Alcau tells the story of a facility far away from Mt. Ebott in which a new set of monsters is held after losing its own skirmish against humans. After managing to break free from the clutches of Mt. Ebott's Underground, our hero Nex finds himself in yet another holding facility for monsters where his life is at stake. He's quite a few miles off from where he used to be and quite a few memories off from WHO he used to be, but throughout his journey he'll regain his bearings, learn more about himself, and maybe even bring justice to a whole new population of monsters.

A sentient fungus named Todd (@dashingtoadie-the-sequel) takes the role of Undyne. No one is sure where they came from, but they've been around ever since the facility was founded. They pride themselves on their seemingly endless persistence and unparalleled work ethic. This pride and energy comes at the cost of a short temper, meaning they can be a bit of a danger to themself and others if put in a bad mood. That's why the Warden started implementing a swear jar system for them-- their pottymouthed past was pricey enough to sponsor entire highways!

Logo by Toadie

Anyone remember this? This is a REEEEAL old-school Toadie throwback. Like, even before the two of us were friends level throwback. If you've known us that long, you're a real one.

[Alcau] Hero of Spores

UNDERTALE Soundtrack

NGAHHH!!

> Credits <
Thumbnail: @not-maxvillasanc
Art: @not-maxvillasanc
Song: @not-maxvillasanc & @user-298043609
Song corresponding to the Your Best Friend repleacement
------------------------=This is VanillaMax and he is replacing Flowey in the AU=------------------------
> Quote <
*Heya! I'm Van and I'm a Frapuccino
*Don't ask why I am in the sewers
*Anyways, You want a candy?
*They're delicious
*Move around, grab as many as you want.

Progreliters Masters OST: 003 - Your Sweetest Friend

"* You want to know my name before I kill you?"
"* Sure."
"* They call me "Armageddon"."
"* Because I'm the only thing standing between the lifeline of this world and you."

Song by: @od-the-second-impact
0D/Goshenart is Undyne.

This is an update to the "NGAHHH!" replacement.

[AUversal Lockdown] Enter Armageddon (Update)

> Credits <
Thumbnail: @nelchael-recabarren
Art: @eliefer
Song: @nelchael-recabarren
Song corresponding to the sans. repleacement
------------------------=This is Nelchael and he is replacing sans in the AU=------------------------
> Note <
* No note *

Progreliters Masters OST: 015 - It's ya boi nel.

> Credits <
Thumbnail: @vtrolljara
Art: @eliefer
Song: @krobull
Song corresponding to the Fallen Down repleacement
------------------------=This is Krobull and he is replacing Toriel in the AU=------------------------
> Note <
Oh! te caiste? hahah, oh you dont speak despito, ok is just a joke... i hope you are fine with me, i gonna show you how to pass all the "puzzles" in this place. :3

Progreliters Masters OST: 004 - A Little Progress

> Credits <
Thumbnail: @vtrolljara
Art: Dlc#8234 [original draw] @vtrolljara [digitalizated version]
Song: @vtrolljara
Original song for PLM
------------------------=This is TheDrawer and he is replacing Grillby in the AU=------------------------
> Note <
hello, what do you want me to give you today? as long as I do pages m8>:] 

Anyway, have a nice day! 
or night ! 
whatever

Progreliters Masters OST: 024 - What Do You Need Today M8?

> Credits <
Thumbnail: @krobull
Song: @krobull
Song corresponding to the Ruins repleacement
------------------------=This is a song for the Ruins of the AU=------------------------
> Note <
Welcome to the ruins, Here are some puzzles... be careful

Progreliters Masters OST: 005 - On Fissure

> Credits <
Thumbnail: @vtrolljara
Art: @vtrolljara
Song: @vtrolljara
Song corresponding to the NGAHHH! repleacement
------------------------=This is VtrollJara and he is replacing Undyne in the AU=------------------------
> Note <
* No Note *

Progreliters Masters OST: 046 - Increase

* Counting together as we step over the goal line...
* We still didn’t know a thing.
* Going beyond that line, but seeing it gone when we looked back...
* We still didn’t know a thing.
 * Sweltering, sweltering, sweltering…
* Our shimmering sweat will pour on out!

OST 45 - Sweltering

Hello and welcome to PLM! An Self insert Undertale AU that follows the story of Kelly, a kid that enters to "the dome". A place that was for experiment once. 
-=-=-=-=-=-=> CREDITS <=-=-=-=-=-=-
AU owners: https://soundcloud.com/vtrolljara & https://soundcloud.com/ditrox_the_dog
pfp and banner by https://soundcloud.com/vtrolljara
=-=-=-=-=-=-=> ROLES <=-=-=-=-=-=-=

Frisk: Kelly
Chara: D0modo
Flowey: VanillaMax
Toriel: Krobull
Napstablook: Zilillon
Sans: Nelchael
Papyrus: Chiriko
Undyne: Vtroll
Temmie: Olimac
MTT: Dreem
Alphys: Nathpil
Asgore: Ditrox
Mad Dummy: Labaprox
Grillby: TheDraweR
Monster Kid: Masked Cat

Progreliters Masters OST: 046 - Increase

.:ProgreLiters Masters:.