All tracks made or collaborated on by Moonster/Moonstriker, ordered by OST number.

Second Playlist: https://soundcloud.com/epik-bruh/sets/how-has-moon-made-so-many-songs

Moonstertale (all of Moonster's tracks organized)

Temmie Chang - UNDERSWAP Soundtrack

Water Under the Bridge Bonus Playlist

My take on the Underswap soundtrack, using the "official" swaps. Expect to see lots of Moonswap and Tonyswap tracks, but definitely go check out TS!Underswap and BelowExchange (and all the others) as well (if you haven't already).

underswap by ur mom lol!!!!!

Full List of Swap AUs Used (in order of appearance):
BelowExchange
MIRRORSWAP
Moonstriker the Musical: underswap
Undertale: SWAPPED
Junnboi!Underswap (Take II)
Tony Wolf - UNDERSWAP Soundtrack
TS!Underswap
Inverted Fate (don't kill me please)
skyswap
UNDERSWAPERD
Euniswap
Our UNDERSWAP Dumpster
POLTERSWAP
Snolid Ice's Ironic Underswap
UNDERSWAP*
Underswap by Temmie Chang
Underswap: Distrust
Underswap: Apposite Day
Underswap: Distrust (Expert Mode)
Underswap: Unreasonable Hatred
Underswap: Revenge

Underswap Soundtrack

Basically Belowexchange's soundtrack & "Moonstriker the Musical: underswap"'s soundtrack combined, with MtM first (because it released first). Includes older versions & covers because that's how I roll.

MtM: U logo & soundtrack made by Moonster
BE logo made by SylviaTheGhost (https://soundcloud.com/spiritualworks)
BE made by Quicksilver (Slick Silver x Dashingtoadie)
Beautiful logo combination by me

bowser man challenge: make playlist without using moonster tracks (impossible)

Quickstriker the Musical: Belowexchange + underswap

MoonStriker's underswap - Full OST

The first of each Underswap song. Updated versions are included over old versions. Not including lame, out-there stuff like Passive Megalovania.

I may have gotten some of these wrong or missed some; you'll have to forgive me, I wasn't in the UTSC back when some of these were made.

(Ignore Death by Spookiness and Fight for the Future, they're just there for their precursor tracks [Oh My.../But the Earth Refused to Die])

Better Underswap playlist: https://soundcloud.com/epik-bruh/sets/swappy-is-as-swappy-does

Olderswap

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 
* Mushroom dance
* Mushroom dance
* Mushroom dance
* Whatever could it mean

* It means you have some loose ends to tie up.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
* Shine on, warrior!
* HOPE sparkles around me.
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Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
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Role swap list:
• Frisk - Chara
• Ragel - Flowey
• Toriel - Asgore
• Dummy - Mad Dummy
• Napstablook - Mettaton
• Sans - Papyrus
• Annoying Dog/Toby - Temmie
• Nice Cream Guy (Blue Ears) - Muffet
• Glyde - So Sorry
• Snowdin Shopkeeper (Q.C) & Snowdin Innkeeper - Hand Receptionist & Diamond Receptionist
• Grillby - Burgerpants
• Monster Kid - Asriel
• Undyne - Alphys
• Gerson - Gaster
• Riverperson - Father Alvin
• RG 01 & 02 - Dogamy & Dogaressa
• Catty & Bratty - The Warrior & Purple Guy
• Aaron - Froggit
• Moldbygg - Whimsun
• Woshua - Moldsmal
• Waterfall Shark (cut character) - Vegetoid
• Love Crab (cut character) - Migosp
• Shyren - Loox
• Vulkin - Snowdrake/Snowy
• Tsunderplane - Ice Cap
• Pyrope - Chilldrake
• Larpy - Doggo
• Cheerleader - Lesser Dog
• Asura (cut enemy that looked like an amalgamate of the RGs) and Bob - Greater Dog (Asura being the armor while Bob is the actual replacement) 
• Elephant Monster - Gyftrot
• Heats Flamesman - Snowman
• Clam Guy - Faun
• Snowdrake's Father - Hot Dog Vulkin
• Sleeping Monsters - Hot Dog Harpy
• Rabbit Kid - Diamond Boy 1
• Rabbit Girl & Cinnamon - Diamond Boy 2
• Gift Bear - Business Dude 1
• Politics Bear - Business Dude 2
• Scarf Mouse - Business Manticore
• Nacarat Jester - Shambling Mass
• Slime Family - Dragon Family
• The Person Behind the Door - The Hotel Resident
• Ice Wolf - Charles
• Library Lizard - Fish Receptionist
• Library Loox - MTT Resort Janitor
• Newspaper Editor 1 - Fuku Fire
• Newspaper Editor 2 - Skateboard Girl
• Big Mouth - Oni
• Drunk Bun - Fox Head
• Ugly Fish - Fickus Lickur
• Red Bird - Scared Donut Guy
• Punk Hamster - Dress Lion
• Echo Flowers - Talking Rocks
• Echo Flowers Explainer - Gaster Follower 3
• Loren - Gaster Follower 1
• Ferry - Small Bird
• Elder Puzzler - Gaster Follower 2
• Clam Girl - Briefcase Dude
• Onionsan - Grandpa Semi
• Goner Kid - Ralsei
• The Snails - MTT News/Cooking Show Items
• Madjick - Memoryhead
• Knight Knight - (Endogeny/Muttler)
• Final Froggit - Aaron (Lemon Bread)
• Whimsalot - Moldbygg (Lemon Bread)
• Astigmatism - Shyra (Lemon Bread)
• Lemon Bread - Reaper Bird
• Dragon Monster (cut character) - Crystal (Snowy's Mother)
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SOUL swap list:
• Determination - Hope [Switch SOUL] (additionally, it's using the split/double screen format like the Nintendo DS). There's an in-universe explanation for this too, which is that the split/double screen format works in a meta way, namely:
- Top screen represents Frisk: menu, map, guide, etc (this is because they are familiar with the world of monsterkind.)
- Bottom screen showcases Chara's adventure.
(Frisk and Chara are the two halves of the Split SOUL, kind of like a fusion, in a way)
• Patience - Bravery
• Integrity - Perseverance
• Kindness - Justice
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Area swap list:
• Ruins/New Home - Waterfall (The Sanctuary and New Hope)
• Snowdin Forest - Hotland (Vulkino and Snowcean) 
• Snowdin Town - MTT Resort (Vulkinyk City/Neon Mall and Frostover Town)
• True Lab - CORE (Abandoned Factory and Snowstorm Forest)
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Misc. swap list:
• 16-bit - 8-bit Pixel Art
• Speech Bubble - Dialogue Box
• Nintendo Soundfont - SEGA Soundfont
• Dummies - Conveniently-shaped Lamp
• Outer Space (Napstablook Hangout Scene) - Mettaton's Musical Scene/Dungeon Puzzle
• "Cooking With a Killer Robot" Scene - Thundersnail

Water Under the Bridge - Soundtrack

If you press "U", this leitmotif will play.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- Uwa!

☂ Ting-a-ling ☂

Name the fallen human
"FRISK".
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Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- Ruins
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Yep, Frisk is still the first fallen human here! You play as Chara. On the other hand, "Determination" swaps with "Hope". Which means, "Hope" is the core trait of every human being. Chara benefits a lot of hope and possesses the soul of "Courage".

☂ An Empty Stream of Progress ☂

*It's a pile of blue glowing mushrooms.
*They must've softened your swift impact.
*Nowhere to go but forward.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- None
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Yep, this is the "wind" replacement. Additionally, Waterfall swaps with the Ruins, more specifically, the Garbage Dump swaps with the Starting Point and the mushrooms swap with the golden flowers. If you fall onto them, you'll find yourself in a beautiful and serene atmosphere of the sanctuary... well not when you're in the start of it since there'd be garbage all over the place. And just as importantly, have "faith" in yourself to the end!

☂ Waking up in the Garbage Dump ☂

This leitmotif plays when you go to the sound test.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- Patient (Melody A)

☂ Mild City ☂

This leitmotif plays when you go to the sound test.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- Patient (Melody B)

☂ Green Mill ☂

This leitmotif plays when you go to the sound test.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- None

☂ Double Trouble ☂

BELOWEXCHANGE
The RPG that can have a true happily ever after.
If you want it to.
--

This is celebratory thing 2/3 for BE's one year anniversary! I wanted to have some rendition of that UT promo art done for this, but not all of the character designs are finalized yet rip
Thank you again for your support everyone, it's been a great year! Plenty more stuff on the way!

Bonedoggle (trailer ver.)

UNDERTALE By Toby Fox
DELTARUNE By Toby Fox
UNDERSWAP By Hatsune Miku/Tony Wolf
MIRRORSWAP By @frisk-reborn-again
This account is run by @frisk-reborn-again
Song By @frisk-reborn-again 
Sprite By @takextracrumbs

PS5 Trailer Theme

*Long since, two races reigned over the EARTH: HUMANS and MONSTERS.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- Ruins(/Battle Against a True Hero)
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Since it's related to the intro, the barrier swaps with the gate entrance from the Ruins, and Mt. Ebott swaps with Mt. Emmett (which is actually real mountain if you search it up =P)Like Toby's old plan, Chara's going to seek for a refugee from a heavy rain outside, which explains why it'll be raining in the sanctuary. Chara will be donning a cute green raincoat and bring an umbrella as a... weapon.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Third update! Remember the very first version of "Left in Ruins"? Yeah, this is a combination of the two which additionally uses genesis soundfont to stay consistent with the technical SEGA and Nintendo swap.

☂ Left in Ruins ☂

*if you want, you could also submit custom monsters.
*surely, everyone has the creativity to design them however they want.
*though that'll be $500 each.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- sans. (tuba)
- Nyeh Heh Heh/Bonetroulse (Part 1)

☂ just another sans' theme ☂

underswap, a game where a truly happy ending is possible! Only if you choose so.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- Ruins
- Song That Might Play When You Fight Sans
- It's Raining Somewhere Else

underswap - Putting a Little More 'Backbone' into It (Trailer)

A song to open a whole new chapter. An adventure has begun!
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Undertale and Deltarune was created by Toby Fox
In an alternate universe, Underswap and Warpedsun were created by Temmie Chang
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
- An Ending/Ruins
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
So I suppose this is basically the first introduction to WARPEDSUN, the deltarune replacement of the swap universe that I made. "Before the Story" plays for both games. And before we actually begin to posting WS tracks, WS is a team's AU (just like how Toby Fox made his own team for deltarune), meaning I won't be the only person to work on it. "What about PROSEMOOR?" Don't worry, I have a few songs done for PROSEMOOR and will continue uploading again later. On the other hand, WS swaps dark world with other dark world instead of just swapping characters all over again.

☂ A Beginning ☂

Submitted by @smartcellist1. If you have any Moonstriker tracks that you would like to see on Soundcloud, DM me the link (either through Soundcloud messages or Discord [Bowser Man#9144])
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=--=-
Underswap was created by Temmie Chang

This is an exclusive track that plays in the "Title Screen"
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=--=-
Motifs:
- Escaped Chasm (by Temmie Chang) - Title Screen
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=--=-
Original release date: August 13, 2020
Title and description taken from Youtube upload (youtube.com/watch?v=gxxgs8bwc6M)
Song by Moonster (@moonstrikefour)

[Undertale AU] [Underswap] Title Screen

Leitmotifs:
Reuinited
Stronger Monsters
Respite

The Tale [A Frisk Once Upon A Time]

Let's Start [A Frisk Start Menu]

Music for the Underswap game 8y Team Switched. you can follow the project here:
http://gamejolt.com/games/undertale-underswap/160094

UNDERSWAP - WoTs oF WuV! >w<

UNDERSWAP - Swapped Menu

UNDERSWAP - Once Upon a Swap...

art by me ;)
second part bonequarrel by lollegee

Underswap ts - Bonequarrel trailer version(Unnoficcial)-Credits in the desc.

This replaces "Once Upon a Time"

Swapped Rhythms was created by: https://soundcloud.com/punniester-master_2019
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All the leitmotives are from "Your Best Nightmare" if you still can't tell. The 2nd part is from the unused part of it and heavily modified, though the rest is mildly modified as well. Again, it's a fan-track if not official.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Check out the entire playlist of Moon's musical rendition of Swapped Rhythms here: https://soundcloud.com/thesecondstrike/sets/undertale-au-swapped-rhythms

Source of Image: https://sasuisgay.tumblr.com/post/142091733012/velocesmells-once-upon-a-time-i-tried

Youtube: https://www.youtube.com/watch?v=yRcbsS_rdgQ

[Undertale AU][Swapped Rhythms] In Times Gone by...

Underswap was created by Temmie Chang

This replaces "Once Upon a Time"

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Again with the irl Toby and Temmie swap reference!
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
-Escaped Chasm (by Temmie Chang) - House (Modified)

[Undertale AU][Underswap - Main Theme] Introduction of Everything

Underswap was created by Temmie Chang

This replaces "Start Menu"

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotif:
-Escaped Chasm (by Temmie Chang) - Title Screen

[Undertale AU][Underswap - Start Menu] Name Screen

Underswap was created by Temmie Chang

This replaces "Fallen Down"

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotives (In-order):
-Determination (King Description Arrangement)

[Undertale AU][Underswap - Asgore] Sage of the Vaults

Underswap was created by Temmie Chang

This first track replaces "Your Best Friend", while the rest are exclusives.

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Leitmotives (In-order):
-Mushroom Dance
-Escaped Chasm (by Temmie Chang) - Hot Demon Man (Modified)

[Undertale AU][Underswap - Ragel] Ragel + Dance Alongside the Mushroom + Freaky Fungi

Undertale by Toby Fox
Swapped Rhythms by FwugRadiation

*In times of yore, two unique kinds were risen to care for the EARTH: HUMANS and MONSTERS.
*In the aftermath... it became the worst nightmare for both of them.

FwugRadiation - SWAPPED RHYTHMS Soundtrack - 01 In Times Gone by...

Deepertale is an AU that takes place in the aftermath of a nearly complete Genocide Run. Alphys has hidden all the survivors in the True Lab. Flowey was the only one who got in the human's way and lived to tell the tale (and that was by escaping within an inch of his life). The human has chosen not to erase the timeline yet, and walks the dusty Underground while down further below the monsters cower in fear.

Deepertale logo by @creepabotinc
Deepertale is considered to be a satellite AU of the Aftergore series, the Discord server of which can be found here: discord.gg/WbzykND
Deepertale is owned by @slick_silver

[Deepertale] In Memoriam

Special thanks to @moonstrikefour for this contribution!
---
Branch 1 (titled "The Divided Underground") details an ending where the human abandons their plans of genocide after their confrontation with Sans in Snowdin. They treat everyone they meet from that point onward with kindness; leaving monsterkind divided on their opinions about humans. With tension among monsterkind rising day by day, and with Queen Undyne's attempts to reunite monsterkind continuously failing; how will the underground react to a new fallen human?
---
We have a Discord server, come say hi! - discord.gg/hy4B74jBzq

Disbelief: Aftermath [Branch I] OST - Their Story So Far... (Contributed by MoonStriker)

* Mushroom dance
* Mushroom dance
* Mushroom dance
* Whatever could it mean

* It means you have some loose ends to tie up.

Undertale was created by Toby Fox
Underswap belongs to the community
However, somewhere in an alternate universe... Temmie was the creator of Underswap

In all seriousness, this is my take on Underswap.
You can call it Temmieswap, Moonswap, "underswap", or even lowercaseswap (thanks to Slick Silver)

Beforehand, this is in no way related to "Legend Behind the Chasm". That AU stays as an ambitious "Underswap-inspired" AU project with a particular Temmie's aesthetic. This is all the more the fun little reboot of my old "Temmieswap" official soundtracks. While this garners some of the canon/classicswap aspects, I've decided to add a little bit more of creativity and spice some things up, but not to point where it goes "very original" which is not what I'm aiming for. Roles might change in the future, but for now, it's still a heavily work in progress. And final note, I'll only swap "Undertale" motif with another "Undertale" motif. So there's no other Toby motifs, let alone Temmie's

Role swap list:
• Frisk - Chara
• Ragel - Flowey
• Toriel - Asgore
• Dummy - Mad Dummy
• Napstablook - Mettaton
• Sans - Papyrus
• Annoying Dog/Toby - Temmie
• Nice Cream Guy - Muffet
• Glyde - So Sorry
• Snowdin Shopkeeper & Innkeeper - Hand Receptionist & Diamond Receptionist
• Grillby - Burgerpants
• Monster Kid - Asriel
• Undyne - Alphys
• Gerson - Gaster
• Riverperson - Father Alvin
• 01 & 02 - Dogamy & Dogaressa
• Catty & Bratty - The Warrior & Purple Guy
• Patience - Bravery
• Integrity - Perseverance
• Kindness - Justice

Area swap list:
• Ruins/New Home - Waterfall
• Snowdin Forest - Hotland
• Snowdin Town - MTT Resort
• True Lab - CORE