Here are some Au themes I found when exploring the SoundCloud website. Enjoy.                                   
Rules for this Au Playlist:                                              
1. If there's a new version of the theme that sounds better, that theme will be replaced with the new version.                                                                     
2. If a Au theme haves a motif that similar to that theme, it won't be added to this playlist.                   
3. If an Au theme sounds so bad that it should get a V2, it's added to the bottom Best to Worst themes

Update: I Updated picture because that other one was outdated.

An Once Upon A Time Undertale AU Compilation Mix 2025

Not much to say for this one. It was fun experimenting with the composition.

001 - Once Upon A Time

original art: https://robogart.tumblr.com/post/186053022876/you-felt-your-sins-crawling-on-your-back-cant

bones

this cover is my favorite.

Original music by: Xeno
Drum Sample used, by: Zasriel
Music and thumb by: Me

FLP (give creditos) https://drive.google.com/file/d/1Ko_9jOmgNY_JsJ3sgUqdAWjpA0Q5xVxJ/view?usp=sharing

Overtime OST: 100 - Showdown

"don't mind the dust, i haven't cleaned up the bar quite yet."

Art created by Crex.
[Sans' main non-battle theme.]

sans.

I CAN DO ANYTHING [says mr schizo]
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i plan to make other deltarune secret boss covers
next is big shot
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SONG BY: TOBY "RADIATION" FOX
COVER BY: ‪https://soundcloud.com/hyperisglitching/tracks
ART BY: ‪https://soundcloud.com/nello-114011740
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DO NOT USE WITHOUT PERMISSION

THE WORLD REVOLVING [1/3]

* Sometimes you gotta learn when to quit.
--
MY SOCIALS / LINKS:

SOLO.TO: https://solo.to/charty
SOUNDCLOUD: https://soundcloud.com/charty03
SPOTIFY: https://open.spotify.com/artist/5WMv9L9Y2PW9b5qRBG910f
DISCORD SERVER: https://discord.com/invite/N78X2g2qTM
FLP STORE: https://hipolink.net/charty

"SMOKING SAVAGE" originally composed by SFX (https://soundcloud.com/fuckthisaccountitdumb/sfx-swapspin-smoking-savage)
Art by DEO

SFX!Swapspin ~ SMOKING SAVAGE (2025 Version)

End of Summer

After a whole 7 months, I decided it was about time I updated this.
The old one was a blast to make, and I can easily say the same about this one.
Pretty sure that's all I wanted to say, so... hope y'all enjoy!
credits
_______
alternate associations belongs to @sub-zero-v117, who came up with ideas for the song
most of the motifs used here do not belong to me
recognized maniacs belongs to... who the hell knows
sudden changes belongs to spouting
undertale belongs to toby fox
motifs used
___________
Main Lead: Blue Streak (with Broken instrumentation)
Intro Buildup: The Fall of Them All, Bulls Psy (guessed: G.N (The Yoshi Viking))
Pre-Drop: Broken, "destro."
Strings: Main lead, Green Hill Zone
Square: Hrrghlovania + Terminating Tranquility
Pre-Chorus: Main lead, Theovania (guessed: Mag7Ma 3), Broken, Hrrghlovania
Chorus: Hrrghlovania, Terminating Tranquility, Animus, Gun Enthusiast
Chorus 2: Hot Garbage (guessed: Soufon), Flatline (guessed: Facey), Megalolazing ver. Drop/Team Closure (guessed: Snolid Ice), Misfortune (guessed: cheeprick), Failing Calibre, Gorilla Warfare (guessed: Snolid Ice)
Hidden Chorus Motifs: Poetic Justice, Bullet Hell, Bulls Psy, Realidad
Post-Chorus: Semblance, Your Reality (guessed: Facey), Lead Poisoning, Hydrocity Zone, Mental Breakdown
Piano Section: Hrrghlovania (guessed: Jario1677)
Pre-Guitar Section: Marble Zone (guessed: Kokomi)
Guitar Section: Oil Ocean Zone (guessed: Snolid Ice), Sandopolis Zone (guessed: Dr. Bones), Conspiracy (guessed: cal)
Bridge: Troubleshooting + Stone Smashed, Main lead, Hrrghlovania (guessed: Facey), Zeitgeist (guessed: Facey), Gangster's Paradise
Impact Hits: Waifu Wars (guessed: Snolid Ice)
Guitar Solo: Reanimation, Cold Blood (guessed: Facey), Transcendence, At Gunpoint (guessed: Facey)
Ending: Main lead, Gangster's Paradise (guessed: Xeno)

Alternate Associations - MENACING SHOT ver. 2

CREDITS:
Full song by: @dashingtoadie-the-sequel
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[* this is the once upon a time replacement of my au.]

* long ago, two races ruled over earth: humans and monsters.
* one day, war broke out between the two races.
* after a long battle, the humans were victorious.
* they sealed the monsters underground with a magic spell.
* many years later...

mt. ebott
201x

* legends say that those who climb the mountain never return.

001 - once upon a time.

Check out the original Soundtrack:
https://tobyfox.bandcamp.com/album/undertale-soundtrack

001 | Beginning Anew

Song made by: https://soundcloud.com/siegfried-e-s-o

Join our Discord! - discord.gg/JyUy8tq

001 - Once Upon A Time (Siegfried)

i literally can't think of a cool quote so imagine sans saying something epic

basically i was tired of all sans' asgores being "oh i have depression boo hoo but also i'm badass wanna have a bad time" and did exactly the same thing i just complained about

art by me
storyshift by voltra
fonts by people i'm too lazy to look up

.:StoryShift - intro. + sans' mercy:.

This can be for any au you want (Papyrus as Asgore only), provided you give credit to original creator of the song. Please ask beforehand.
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This song was requested by Reth-Vill15 (along with the motif choice): https://soundcloud.com/user-458203278
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Request list (Role-swap themes):
1̶.̶ ̶C̶h̶a̶r̶a̶!̶N̶a̶p̶s̶t̶a̶b̶l̶o̶o̶k̶ ̶-̶ ̶G̶h̶o̶s̶t̶ ̶F̶i̶g̶h̶t̶
2̶.̶ ̶P̶a̶p̶y̶r̶u̶s̶!̶A̶s̶g̶o̶r̶e̶ ̶-̶ ̶A̶S̶G̶O̶R̶E̶
3. Asriel!Mettaton - Metal Crusher
4. Fear the Undead V2
5. Corrupted Justice - Heartache Replacement (Alphys)
6. Alphys!Asgore - ASGORE
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Leitmotives (In-order):
-Bonetrousle + Trailertrousle (Modified)
-Lost Soul's Storyswap - "fractured feels.": https://soundcloud.com/lost-soul-official/owie-my-fweels-brov
-Storyswap Color - "March On!": https://soundcloud.com/mrepicishere777/march-on?in=mrepicishere777/sets/storyswap-color-ost
-Spooktune
-It's Showtime
-Determination

Source of Image: https://aminoapps.com/c/undertale/page/blog/king-papyrus/prXS_Qu4PGMRnLmYzkpKPanRW2m4Q5

[Storyswap/A Papyrus ASGORE] FACE THE POWER OF GLORY!

UNDERTALE Soundtrack

"That Comedian" from the DF CONNECTED OST.
Composed by Perpetrator (https://soundcloud.com/dont_forget_me).

That Comedian | DFC OST

This is just my second account for KennyVargas20 just in case for some reason. lol

Thumbnail Art by: https://soundcloud.com/luigifan54321
Hello! Welcome to the Soundcloud page of the Official Undertale Community OST. What is this you may ask? Here's how it goes:

A randomly generated number is given to someone from 1-101. Whatever number they get is connected to a song from Undertale, and they make it. If a person, say, gets 38, they would have to make a "Spookwave" track. If they got 14, they would have to make a Heartache track. An entire soundtrack is soon made, and then finally uploaded here for all to listen to. In order to join, all you need to do it join our Discord server: https://discord.gg/JyUy8tq More info is there, so if you're interested in joining the project you must be there to have your song assigned. Enjoy!

001 - Once Upon A Time (Siegfried)

Official Undertale Community OST

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