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Update: I Updated picture because that other one was outdated.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

Suzilla's theme is finally here! This battle is the final one between Tenna before you seal the fountain. This track took way to long to do and now it's finnished. Enjoy! 
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YT upload ---> https://youtu.be/ikK6OQk6uQo?si=WmyFghpM0lGEPJ-H
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Join my Discord! ---> https://discord.gg/gcwaQYk79h

Suzilla

sad kris.. 
original song by @notrealnevereal

5000 ping and counting (COVER)

* fool me once, SHAME ON YOU!
* fool me twice, THE JOKE'S ON YOU!!

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Sprite and character design by: https://on.soundcloud.com/NED7d9ht6JATGLyL7

♪ Lucky Day

* This time.
* We shall unearth an old story once more...
* Rise.

001 - Once Again

49 - It's BED TIME! [Mixmatched Tuppers]

AH, A CONNECTION?
GOOD. VERY GOOD.
WELCOME TO THIS LITTLE EXPERIENCE.
I HOPE YOU HAVE FUN.
BUT FIRST, WE HAVE TO ASK YOU SOME...QUESTIONS.
THEY WILL BE PERSONAL.
DO YOU ACCEPT?

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song by glom
dialogue by me
We're just getting started.


HER AGAIN

* The feeling of adventure fills you with LOVE
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Track by: https://on.soundcloud.com/QSXPyVWnbsnaiFDn4o

New Den

* ...
* Ehem.
* ...
* Are you gonna leave or?


This track replaces "Chill"

041. Awkward Silence

MIDI download here: https://drive.google.com/file/d/1N7jWnnThD82cw7Dl6BtUi-zbjZZmPJBR/view?usp=sharing

[The Delta Warriors walk into the Café. Sitting at the farthest table, hunched over an empty latte glass, is King. A Swatchling is standing next to him.]

KING: MORE COFFEE, SERVANT!!!
SUSIE: Huh?! What's HE doing out of his cell?!
RALSEI: Since it's the festival, I thought it might be nice to let King join in.
SUSIE: But the guy's a maniac! He'll try to kill us again!
RALSEI: Look, Susie. I know that King did some things that… weren't in our best interests. But underneath all his rage, even he has a caring side.
SUSIE: And how would you know that?!
RALSEI: Every day, I go to the dungeon to check on him. Make sure he isn't lonely. And sure, he likes to rant about how he could break himself out of there anytime he wants, and how even if he didn't, the Knight would thrash us anyway. But at the end of it, all he really wants to know is how Lancer's doing. He hopes that he'll visit him every day. He really loves him, you know.
SUSIE: Ugh, I guess, but-
RALSEI: The whole reason why King ended up like this was because he felt left out and left behind. Nobody played with him any more. That's just how things are in the Light World. But here in Castle Town, it doesn't have to be like that. Every Darkner should get a chance to be included and useful. I want to make sure of that.
SUSIE: Heh. For someone I've known for less than a week, you've really learned how to pull my heartstrings, haven't you?
RALSEI: You make me sound like I want to manipulate you-
SUSIE: Look, I'm not going to believe King's a good person unless I see it with my own eyes. But you know… If… If you guys hadn't given me a chance, I'd have ended up in the same place that he is. I'll allow it.

Score composed and arranged in Musescore 3. All sounds created using the default Musescore soundfont.

DELTARUNE and "Lancer"/"Chaos King" leitmotifs created by Toby Fox. Logo design sourced and edited from the @tobyfox-music SoundCloud page.

King Swing

* About Iceburg? Well, there's not that much to say about it. 
* Typical growing town in the middle of the frozen forest.
* We have here everything for a comfortable life, so nothing to complain about.
* Place to eat, place to sleep, nothing fancy but cozy and nice enough.
* And we're under the watch of Royal Guard, so no rascals rustling anymore.
* . . . But I wanna notice that he's seem kinda green at all this guarding stuff.
* Takes his role a bit too seriously, better than previous one anyways.
* Well, at least the town's not too boring anymore.
* Seeing that bonehead on his duty never fails to be fun.
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Thumbnail is in progress, I'll change it when I'll figure something out

22. Beyond Storefront

A soothing collection of ambient soundscapes designed to guide the mind into deep rest. This album blends soft 432 Hz harmonics, warm delta-wave textures, and gentle atmospheric layers that calm the nervous system and dissolve stress. Each track flows with slow-evolving pads, distant celestial tones, and subtle resonant frequencies that naturally support relaxation, meditation, and deep sleep. Crafted for quiet nights, healing spaces, and moments of inner stillness, this album invites the listener into a peaceful journey beyond thought, where the body unwinds and the mind drifts into effortless tranquility.

Healing Delta Patterns

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)

UNDERTALE Soundtrack

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

HAVE YOU EVER THOUGHT ABOUT A WORLD WHERE EVERYTHING IS EXACTLY THE SAME...

EXCEPT YOU DO NOT EXIST?

. . . I WILL PRESENT TO YOU A MARVELOUS CREATION.

. . . I WILL GRANT YOU AN EXPERIENCE UNLIKE ANY OTHER.

001 - Once Again

ABSENCE

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