original by saster https://soundcloud.com/sasterdadudester

art https://www.deviantart.com/peptobismolpete/art/Underswap-Striking-The-Demon-Down-848551712

STRIKING THE DEMON DOWN [Cover]

You have been fooled.

bye bitch!!!!!!!!!!!!!!! 

thanks @xylium for helpp!!!

[Pixy's Last Breath]

We're now Undertale: Quantum Leap! I have decided to no longer have this AU be a swap take, because I am tired of Underswap. So now, it's more of it's own thing. Please consider reading the AU Info below, where you can find everything new about the AU!
New Logo by UnShulf & Dexie.
Track by dexiedoo_octo: https://soundcloud.com/dexietwo/tracks
(New and UPDATED!)AU Info: https://docs.google.com/document/d/1FgESTGZ2mXsA5DziNAmRaJkiewjYgaq--UcOb4M3FgE/edit
Discord Server: https://discord.gg/p7gjvQQg6j

[AU Reboot] Once Upon Another Time (Formerly Underswap: Ultra)

i did it sometime ago, it's not that good

Untitled PieDaDude megalo

Finally, here it is. The last piece of my 400 followers special, a part 2 to my Unwavering Persistence cover! These songs ended up being a tribute to CD as well as satisfying my desire to covering the OST. Once again, thank you for 400 followers, it means so much to me. Unwavering Persistence by @bdvaughn, Collateral Damage by @madd4punk and the absolutely fantastic art by @user-123274983 (https://malt-1.tumblr.com/). I've got several songs in the backlog, so keep an eye out for them!

[400 Followers Special 3/3] [Undertale: Collateral Damage] Unwavering Persistence: Part 2

Since I first started creating and releasing music back in 2015, I've had loads of fun experimenting with virtual orchestral instruments. One of my main composing objectives while using these instruments has been to try and paint vivid cinematic soundscapes that evolve and inspire - 'Rain Shelter [2017]' is my first instalment of works in this style. 

Ever since then, I have created tons of orchestral/ambient works that live in a similar space. Some of which made their way into projects such as "Sketches of an Old Soul [2023]" and "Cloud Fields [2023]" - But even so, there were a few core ideas (started back during my 2015 exploration phase) that never made it to the point of completion. At long last, "Above the Sky [2025]" eventually rose from the aether and acted as the shining motivation needed to finish the unfinished. The results are a marvellous culmination of cinematic vibes built across years of musical sketching and experimenting, now here to delight your ears.

Released on my 30th birthday, and to mark a decade of writing music professionally - may you enjoy this collection of music. 

-Ian Aisling

Purchase on Bandcap

Flow Mystica

HUGE thanks to https://soundcloud.com/ncpthechamp-n-word for helping me with a good portion of this, including the edited lead.

Yeah.  I didn’t think I was gonna do this, but I did and I’m super proud of it.  This might be the final version, or it might not be.  I haven’t really decided yet.  I really don’t want this to turn into my version of what proditiophobia was for skeletoun, but at the same time I love that you guys love listening to a stupid megalo about a LSD-infused internet worm.  Thank you all.  So much.

Project:

https://gods-goddesses-and-deities.wikia.org/wiki/Thread:154184
Open this and click the link in this post.  That’s defacement v3’s project file.  Download the midi from there or sumthin.
Enjoy!

DEFACEMENT: SPLIT-SCREEN | A Useless Websites Megalo(V3) [+Sandbox Link]

Hatsune Miku.
* His new album has just released!
Art by UnShulf
Track by HelplessHarp: https://soundcloud.com/helplessharp2465
https://docs.google.com/document/d/1FgESTGZ2mXsA5DziNAmRaJkiewjYgaq--UcOb4M3FgE/edit
Discord Server: discord.gg/2Rypmvz

Dapper Bomb!

**None of this is mine**
By @prodlikeasinewave (***Actual creator of the song is @aytanner)
Thanks to @aytanner for the thumbnail!

Tales From A.U.D.I.U.S. - DATAMINED (Updated!) (By ProduceLikeASineWave***)

Here's a little track to kick the project off, nothing huge.
Taleshift was an AU made in 2016 by Kain222. We'd say it was pretty ahead of its time, considering the sprite comic made it all the way to Waterfall, which wasn't very common then for AUs like this. Honestly, it still isn't. Sure, some parts of it were very generic and other parts...haven't aged all that well...but it's still commendable for what it was, especially at the time it was made, early in the fandom. Very few tracks were ever made for it, and none of them were made for Asriel. We'd say this could also work for Twistedtale, but Twistedtale actually HAD its Undyne replacement made (before it got taken down, please come back Zero ;-;), so we decided it would be for this one instead. We haven't heard from Kain since they said they were moving houses four and a half years ago, but wherever they are, we hope they're doing okay.

Song by: @dashingtoadie-the-sequel
AU archive can be found here: https://taleshift.tumblr.com/

"mwuahaha i will indoctrinate the community into using the super special H&D motif :sunglasses:"
-Toadie

----

Operation F.I.G. (short for Filling In the Gaps) is a project run by @slick_silver that aims to show some love to AUs that have either died or have been dormant for a long stretch of time by making music that never got to be made for said projects before. Many of these will in one way or another be speculative, and all tracks on this page are non-canon / unofficial unless the AU creator decides otherwise. If you are the creator of the AU and would like this track taken down for any reason, let us know and we will comply. Our main rule is that we can't do tracks for old projects run by members on the team, so this is all out of appreciation for others. If you're a musician (or artist) who would like to apply to be a part of our team, shoot Slick a message on Discord at Slick Silver#8818 .
Have a wonderful day!

[Taleshift] Asriel

I'd like to introduce to you a reboot of an old favourite of mine, Tails The Fox.

Tails The Fox is a conceptual soundtrack based on an alternate universe of the Sonic The Hedgehog videogames games, with the intention of taking you across a musical journey. I can't reveal too much but I can say I will be remaking another Tails track uploaded to this account. The idea is that the entire soundtrack will be made using the Korg M1 synthesiser, akin to the original Sonic The Hedgehog games.

I'll see you next time.

Tails The Fox (Modern) - Title Screen {Remastered!}

NEW ACCOUNT!!!!: https://soundcloud.com/ut-quantumleap
NEW ACCOUNT!!!!: https://soundcloud.com/ut-quantumleap
NEW ACCOUNT!!!!: https://soundcloud.com/ut-quantumleap

[Covers or even takes on our songs are allowed, DM on Soundcloud or Discord if you need an FLP:]
[Formerly known as: Underswap: Ultra]

An AU which was originally intended to be a Swap take, but now has its own twists and turns!
(AU inspired by Doctorine’s AUs, Collateral Damage/A Mirrored Reality and AZ!Underswap.)

The AU’s info: https://docs.google.com/document/d/1FgESTGZ2mXsA5DziNAmRaJkiewjYgaq--UcOb4M3FgE/edit?usp=sharing
The AU’s Write-Up Story: https://docs.google.com/document/d/1NiYT39Ii0L7q2MRVm1fu3_lumm13iWb8wYqBf_TGJJg/edit?usp=sharing

Logo by @papyrusfanboy420 and @dexietwo
Banner by @papyrusfanboy420
Underswap by P0pcornPr1nce
Account ran by @fellboixd

[AU Reboot] Once Upon Another Time (Formerly Underswap: Ultra)

UT: QL - Old (CHECK DESC!!!)