My top 5 versions of Scarlet Forest.
While my Undertale lists usually are Top 10s, Deltarune's smaller soundtrack and smaller pool of AUs to choose from (along with existing for less time) means that these lists are Top 5s instead. 
Note that despite Soundcloud's numbering system, the #5 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 "!Deltaswap" (or !Deltafell or whatever) all count as the base AU (i.e. Deltaswap). (Something like Deltarune: Switching Suits, however, could coexist on the list)

Slick's Top 5 AU Scarlet Forests

AU has changed direction and had been rebooted. These tracks and associated account are now archived. 

New account here:
https://on.soundcloud.com/icsB8hn7Keb2dUjj6

Deltarune: Post-Scratch (Archived)

MK57

yeag 11 chupala entonce

DELTARUNE Chapter 1 (Original Game Soundtrack)

Scarlet Forest

Leitmotifs:
School
Faint Courage
THE WORLD REVOLVING

Among The Wreckage [Lightswap]

019 - Scarlet Forest replacement for CLOPSTIKA, a DELTARUNE AU serving as a prequel to Existential Oddities

Composer: DJT0B3
This reupload will be taken down if requested by them

Clopstika

[CLOPSTIKA] Broken Reality (Reupload)

98. Grasp Of A Hero

==================================
Dess: Man.
Dess: That was... rough.
Dess: Seriously, who pissed in her cereal?
Dess: ...
Dess: Let's just go get that chalk, alright?
Dess: Shouldn't take too long.
==================================
Dess replaces Susie.

This would play in the hallway outside Ms Undyne's classroom, after Undyne interrogated Asriel over where the chalk went in front of everyone. Dess intervened, and they were both sent to get the chalk.

Thumbnail by Autumn.
Track by Hodgepodge.

https://discord.gg/wQFw5HaHqC

Dess' Theme

==============================
Dess: Geez!!
Dess: It's freakin' bright in there!
Dess: I can't see anything!
Dess: Az, help me find a lightswitch. Gotta turn this damn light off before I go blind.
==============================
Discord: https://discord.gg/wQFw5HaHqC

Track by Hodgepodge
Thumbnail by Ruki_ru and Hodgepodge
Dess design by Astromity

Deltarune by Toby Fox

The Door

==========================
(At the first save point.)
* Deeper in the forest, you hear a piano.
* It sounds so... familiar.
===========================

Track by Hodgepodge
Deltarune by Toby Fox

Discord: discord.gg/wQFw5HaHqC

Someone Is Playing The Piano

* 𝐀 𝐡𝐮𝐦𝐚𝐧? 𝐈𝐧 𝐌𝐘 𝐭𝐨𝐰𝐧?
* 𝐈𝐭'𝐬 𝐚𝐛𝐨𝐮𝐭 𝐭𝐢𝐦𝐞 𝐭𝐨𝐨, 𝐈 𝐧𝐞𝐞𝐝 𝐚 𝐦𝐞𝐚𝐥.
* 𝐇𝐚𝐡𝐚, 𝐨𝐧𝐥𝐲 𝐤𝐢𝐝𝐝𝐢𝐧𝐠.
* 𝐘𝐨𝐮 𝐥𝐨𝐨𝐤 𝐫𝐞𝐚𝐥 𝐬𝐡𝐚𝐤𝐞𝐧 𝐮𝐩...
* ( 𝐋𝐨𝐨𝐤𝐬 𝐥𝐢𝐤𝐞 𝐂𝐡𝐚𝐫𝐮𝐡 𝐨𝐰𝐞𝐬 𝐦𝐞 𝟐𝟎 𝐛𝐢𝐠 𝐨𝐧𝐞𝐬. )

----------------------------------

This is the "sans." replacement for my tired and old "Puppet Pipeline" joke AU, "Undertale: somwhere else.". Think about it, no one has ever made an AU where Frisk takes the role of Sans, making the name an epic Sans reference!

----------------------------------

remade by me! zootus_! happy halloween folks!
original version: Undertale-fansong-thing – 1-900-490-frisk
original song by @therealmaz
art and concept by @undertale-fansong-thing

----------------------------------

music and art commissions are open!! discord: zootus_1491
tumblr.com/zootyplex/

[Undertale: somewhere else.] - Frisky Freakster

* 𝘊𝘶𝘳𝘪𝘰𝘶𝘴...
* 𝘐𝘵'𝘴 𝘢 𝘮𝘺𝘴𝘵𝘦𝘳𝘺 𝘵𝘰 𝘮𝘦 𝘩𝘰𝘸 𝘺𝘰𝘶'𝘷𝘦 𝘮𝘢𝘯𝘢𝘨𝘦𝘥 𝘵𝘰 𝘸𝘢𝘭𝘬 𝘴𝘰 𝘧𝘢𝘳.
𝘢 𝘩𝘶𝘮𝘢𝘯 𝘪𝘯 𝘵𝘩𝘪𝘴 𝘥𝘰𝘮𝘢𝘪𝘯 𝘪𝘴 𝘢 𝘳𝘢𝘳𝘦 𝘴𝘪𝘨𝘩𝘵, 𝘢𝘧𝘵𝘦𝘳 𝘢𝘭𝘭.
𝘢𝘯𝘥 𝘺𝘦𝘵...
* 𝘐 𝘢𝘮 𝘵𝘩𝘦 𝘰𝘯𝘦 𝘵𝘩𝘦𝘺 𝘴𝘵𝘢𝘳𝘦 𝘢𝘵, 𝘵𝘩𝘦𝘪𝘳 "𝘭𝘦𝘨𝘦𝘯𝘥"
* 𝘐 𝘢𝘮 𝘤𝘰𝘯𝘧𝘶𝘴𝘦𝘥.
* 𝘞𝘩𝘺 𝘥𝘰 𝘵𝘩𝘦𝘺 𝘢𝘭𝘭 𝘴𝘦𝘦 𝘮𝘦 𝘢𝘯𝘥 𝘮𝘺 𝘱𝘢𝘳𝘵𝘯𝘦𝘳 𝘢𝘴 𝘴𝘰𝘮𝘦𝘵𝘩𝘪𝘯𝘨 𝘵𝘰 𝘨𝘢𝘸𝘬 𝘢𝘵.
* 𝘞𝘦'𝘳𝘦 𝘮𝘰𝘯𝘴𝘵𝘦𝘳𝘴 𝘫𝘶𝘴𝘵 𝘭𝘪𝘬𝘦 𝘵𝘩𝘦𝘮...

----------------------------------
new thumbnail by my fave incel https://soundcloud.com/undertale-fansong-thing

This is the "Nyeh Heh Heh" + "Bonetrousle" replacement for my tired and old "Puppet Pipeline" joke AU, "Undertale: somewhere else.". Think about it, no one has ever made an AU where Chara takes the role of Papyrus in addition to Frisk taking the role of Sans, making the name an epic Sans reference!
----------------------------------

remade by me! zootus_!
art and concept by @undertale-fansong-thing

----------------------------------

music and art commissions are open!! discord: zootus_1491
tumblr.com/zootyplex/

[Undertale: somewhere else.] - Hateful Guts + Midnight Dreary

; Smells like damp cardboard.
; It's the TREES.

Playlist: https://on.soundcloud.com/DAiWR

Sleetmarsh

This was on SoundCloud at one point but it was deleted for seemingly no reason.
Archival purposes only.
Original Song by Sinholder

[REUPLOAD]  BIG SHOT EXPRESS - Scampton Big Shot

A PMD2 soundfont tune I wrote a while ago but only posted to twitter for some reason. It is VGM so it does loop.

Shaded Plateau

https://cdn.discordapp.com/attachments/987071928957272104/1178485363828863046/image.png?ex=65765105&is=6563dc05&hm=b0ac340470c87deddefb545d68550213e77995a930095884b7de894e0b6d451a&

Thumbnail by @Devin_Denizen
Inspired by GSO, Surreal and BobT.C. covers
hmmmmmmmm

BATTLE AGAINST THE WORLD

"UEE HEE HEE! SHARK-TO-SHARK! I WOULDN'T HAVE IT ANY OTHER WAY!
NOW, NOW!! LET THE GAMES BEGIN!!"
================================================
this one was really fun to make!!! hope you enjoy :)
deltarune by toby fox
art by me
flp by nini: https://youtu.be/HG1jkHP-LqQ?feature=shared

THE WORLD REVOLVING (nexus remix)

Original chiptune made for "The Grand Classist Tournament" on battleofthebits.com, hosted by Tex.

Razor's Edge [2A03+N163] (Razor Porcupine's Theme)

by https://soundcloud.com/sobanoodlesiguess
thumbnail by m0d_tremendo
===============================================

(Not a lot to talk about here. Sorry!)

===============================================
(Come hang out. https://discord.gg/wQFw5HaHqC)

Crystalline Raceway

This is the "Song That Might Play When You Fight Sans" replacement for my tired and old "Puppet Pipeline" joke AU, "Undertale: The Other Puppet". Think about it, no one has ever made an AU where Chara takes the role of Papyrus in addition to Frisk taking the role of Sans, making the name an epic Sans reference!

----------------------------------

remade by me! zootus_!
art and concept by @undertale-fansong-thing

----------------------------------

music and art commissions are open!! discord: zootus_1491
tumblr.com/zootyplex/

[Undertale: somewhere else.] - The Battle Theme You're Hearing Will Not Play

track and thumbnail by https://soundcloud.com/realhodgepodge
art by https://soundcloud.com/zootyplex
name by https://soundcloud.com/surreal012
original here https://soundcloud.com/chapter-remix/another-hymn

deltarune by Toby Fox https://deltarune.com/
==========================================
updated this one because the old one used what was most likely a gaster or even kris motif (darkness falls) which doesnt make much sense with the gaster/angel swap
so i used The Holy instead since its ... The Holy. angels are holy. 

there are definitely no other notable motifs in this don't worry about it.

Another Hymn [v2]

ARE WE
CONNECTED, ONCE MORE?

I WILL KEEP THIS
QUITE BRIEF.

I MUST APOLOGIZE
FOR MY NEGLIGENCE.

IT APPEARS, DURING WHAT YOU HAVE CALLED
"THE SCRATCH"

OUR DISK, HAD LOST SOME
CRITICAL DATA.

HOWEVER, 
I HAVE SINCE FOUND A WAY

TO RESTORE IT.

THIS PROCESS, WILL TAKE
QUITE SOME TIME.

HOWEVER, I AM AFRAID,
I MUST REMOVE THIS DISK, FROM YOUR POSSESION.

THE "GAME"
WILL NOT CONTINUE, FOR A WHILE.

BUT I TRUST, THAT WHEN IT RETURNS
WE WILL BOTH BE READY TO CONTINUE.

https://discord.gg/Mk6HE3KqBc

Crystalline Raceway

Post-Scratch Archive