All tracks that Moonster has made for Deltaswap or his takes of it (DELTASWAP, PROSEMOOR, WARPEDSUN) (and TFG!deltaswap) (and heroglyph), including old versions and outdated tracks, sorted by date, OST order, and AU.

Moonster's DELTASWAPs

Aethercrest The Complete Soundtrack

Slick's Top 5 AU Susies

*Asriel!
*A-asriel, you need to wake up now!
*We have already arrived at school a-and...
*Your mother is waiting for you.
*We better get going now, let's not make her worry about you.
*I-I'll go get my car key.
*A-and make sure nothing, especially important one, is left behind, o-okay?

*W-well, it's a nice day, isn't it?
*I know you really miss your younger sibling.
*But hey, c-cheer up! Kris' going home this week.
*And I'm sure when they come back here, they will b-bring us lots of surprises!
*...Right?

This is the "Beginning" replacement

This is a Deltaswap take of mine and it is not for your AU. Please do not claim it as yours, although you are allowed to extend this song, provided you give credit to the original creator. Ask beforehand.
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Introducing "PROSEMOOR". A complicated opposite of Deltarune itself. It's named that way instead of an anagram of Underswap or simply Deltaswap. The relevant swaps for now are listed below:
• Asriel - Kris
• Alphys - Toriel
• Noelle - Susie
• Rudy - Asgore
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Asriel takes the role of Kris. He is usually a fun, caring, friendly, and sociable type, but due to some stuff going on in his life, he has to confront the hardship that has been taking the wind out of his sails. In the first scene, he returns to his hometown after a long school trip. He's found sleeping in a school bus and Alphys has to wake him up and escorts him back to Toriel by her car. On the way home, a bunch of people happily welcome his homecoming.

Alphys takes the role of Toriel. She is not Asriel's mom, but she is still his teacher. She is the first re-introduced character beside Asriel. She is first seen in a school bus, waking up Asriel from his sleep. She then drives him back home.
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Leitmotives (In-order):
-His Theme
-Escaped Chasm - House: https://youtu.be/Q7gtYXjRWOs?t=82​

Whether Deltaswap should exist or not at the moment. In the end, this is just a fun little project I'm making.

[Deltarune AU][PROSEMOOR - Asriel] Recollecting Memories

*Mom, I'm home!
*...
*I wonder where mom is.
*She's supposed to show up right now.

*Asriel? Is that you, my child?

*Yes, mom, it's me.
*I'm back from the school trip.

*Asriel!
*Welcome back, my child.
*How was your trip?
*Did you have fun?

*Kinda, I guess.
*It wasn't much, but at least I learned something yesterday.
*(Even though there was nothing really fun at all honestly)

*That is very good, Asriel!
*Did you know that Kris will return home this week?

*Yeah... I know. 
*Ms. Alphys told me that.
*Now, mom, I gotta clean clean myself up.

This is the "School" replacement

This is a Deltaswap take of mine and it is not for your AU. Please do not claim it as yours, although you are allowed to extend this song, provided you give credit to the original creator. Ask beforehand.
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Introducing "PROSEMOOR". A complicated opposite of Deltarune itself. It's named that way instead of an anagram of Underswap or simply Deltaswap. The relevant swaps for now are listed below:
• Asriel - Kris
• Alphys - Toriel
• Noelle - Susie
• Rudy - Asgore
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Asriel takes the role of Kris. He is usually a fun, caring, friendly, and sociable type, but due to some stuff going on in his life, he has to confront the hardship that has been taking the wind out of his sails. In the first scene, he returns to his hometown after a long school trip. He's found sleeping in a school bus and Alphys has to wake him up and escorts him back to Toriel by her car. On the way home, a bunch of people happily welcome his homecoming.

Toriel takes the role of Alphys. However, it does not work traditionally. She is still Asriel's loving and nurturing mother who always supports him no matter what. She is seen at her house after Asriel returns home, thanks to Alphys for driving him back to his cozy place. 
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Leitmotif:
-Yoki's House: https://www.youtube.com/watch?v=XNYUq...​

Whether Deltaswap should exist or not at the moment. In the end, this is just a fun little project I'm making.

[Deltarune AU][PROSEMOOR - Home] His House

This is the "Susie" replacement

This is a Deltaswap take of mine and it is not for your AU. Please do not claim it as yours, although you are allowed to extend this song, provided you give credit to the original creator. Ask beforehand.
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Introducing "PROSEMOOR". A complicated opposite of Deltarune itself. It's named that way instead of an anagram of Underswap or simply Deltaswap. The relevant swaps for now are listed below:
• Asriel - Kris
• Alphys - Toriel
• Noelle - Susie
• Rudy - Asgore
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Noelle takes the role of Susie. She is geeky, smart and a humble girl with a big heart who loves to play with her best friends. When Kris is not around, she always visits Asriel and hangs out with him as she knows Asriel hasn't been in a good condition for a while. She understands his problems and she will be glad to help and support him whenever he needs.

Rudolph "Rudy" Holiday takes the role of Asgore. He is a jovial, jokey, and energetic type, although he is a bit of a dunce sometimes. He is Noelle's best dad and he loves Asriel's family and will do anything for them, in this case, he sends Noelle to hang out with Asriel so Asriel won't have to feel lonely with someone around.
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Leitmotif:
-Lost Girl

Whether Deltaswap should exist or not at the moment. In the end, this is just a fun little project I'm making.

[Deltarune AU][PROSEMOOR - Noelle] Noelle Holiday

DELTARUNE Chapter 1 (Original Game Soundtrack)

Susie

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])
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A Deltaswap "Lost Girl"

Motifs:
- His Theme
- Susie
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Original release date: January 29, 2021
Server location: Doused Flames (discord.gg/VeRf27)
Source of Image: @arrow_nmw (thanks buddy)
Song by Moonster (@moonstrikefour)

[Deltarune AU - Deltaswap] Their Theme

* Noelle!
* What took you so long?
* Listen, it's my responsibility to take you to the school on time.
* You would be late if I didn't wake you up this morning.
* ...and I'm not going to tolerate you for being a heavy sleeper.
* Next time, be ready quicker.
* You won't want to miss your sister, DESS' early return this week, will you?

Deltarune was created by Toby Fox
In an alternate universe, DELTASWAP was created by Temmie Chang
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Leitmotif:
- Girl Next Door
- Darkness Falls/Faint Courage
- Determination
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In this take, the Holidays and the Dreemurrs swap families, more specifically in this case, Noelle and Kris swap places, making Noelle the main protagonist of the story. Additionally, Determination swaps with Once Upon a Time as a result of Faint Courage swapping with Don't Forget.

DELTASWAP [Episode I] - Good Morning (OST 2) (OUTDATED)

Once upon a time, a PROPHECY was claimed among the light.
Deemed as a PROPHECY of DETERMINATION. Deemed as a PROPHECY of GRIT.
Deemed as a PROPHECY of LIGHT. Deemed as a PROPHECY of SHADOW.
This is the prophecy of AETHERCREST
Until tales tell, the LIGHT and SHADOW have been with one accord.
Silencing chaos with eternal order.
But if chaos overpowers order...
Time will blow its trumpet of doom.
The land will erode with terror.
And the sky will be seen in eternal darkness.
Then, her heart quivering...
The EARTH will crumble into oblivion.
However, glimmering with determination...
Three SAVIOURS rise at WORLD's horizon.
THE PROTECTOR,
THE ENFORCER,
And THE MINISTER FROM THE SHADOW.
Only them, can truly shatter the crystals
And exile the KNIGHT'S EMPIRE.
Only then will harmony be restored,
And the WORLD be free from catastrophe.
Today, the CRYSTAL OF SHADOW-
The glass that enlightens this land to subsist-
Rises strong at the core of the floating palace.
However, another flame of shadow crystal has been ignited from afar...
In return, the unity between LIGHT and SHADOW begins to falter.

Deltarune was created by Toby Fox
In an alternate universe, DELTASWAP was created by Temmie Chang
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Leitmotif:
- The Holy
- THE WORLD REVOLVING/Dialtone
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In this take, Ember, the angel figure that can be found near Rudy's hospital bed, takes the role of Ralsei. The reason why is because the figure was crafted by both Noelle and Dess in their younger days and is supposed to be a subtle manifestation of Dess, and I thought this was a brain move if the Holidays get swapped with the Dreemurrs. Additionally, the Knight swaps with the Angel. The Dark Fountain is replaced with the Shadow Crystal, the gentle flame ignited through the lightnant's HOPE, the flame that shapes the realm of shadow. The song is styled after the scrapped version of the Legend. My reasoning for using "The Holy" as a motif it's because is used in "Flashback", which plays during Noelle scene in a hospital in a Weird Route.
It makes the use of that motif for The Legend even more ideal considering a holy being is telling a prophecy. Not to mention, it has a personal connection to Noelle and Noelle herself is an angel, who is also a holy being. Thanks again to @ravenjess27 for the dialogue! Edited by me, Moonster.

AETHERCREST [Episode I] - The Prophecy (OST 8)

"Interesting."
"You want to go back."
"You want to go back to the world you visited last time."
"Hmm..."
"How about this."
"I know a world that you might love to see."
"That is right."
"We will leave the last timeline be and move on to this next one."

"Welcome to Dawnside Isles."

Deltarune was created by Toby Fox
In an alternate universe, DELTASWAP was created by Temmie Chang
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Leitmotif:
- Once Upon a Time (+ PS4 Trailer Variation)
- Good Night
- Fallen Down Reprise
- Home
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In this take, Chara and Frisk take the role of both W.D. Gaster and the Vessel respectively. 
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- Chara chose Frisk (who replaces the Vessel) as a subject to set off on a brand-new journey throughout the isles for reason that is not known yet. Unfortunately, this course of action was immediately halted by the strange man himself. Chara reached out to some people from the Shadow Realm through spiritual contact and voice. Afterwards, these people began to go insane and all they yearned for was a peaceful SILENCE.
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- Frisk is one of the human characters stranded in one portion of Dawnside Isles. They seem to have been living there for at least a month. To survive, they have built a hut and campfire for the night. Sometimes they visit the beach to check if someone or something is sailing nearby, hopefully they can return home.
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The intro scenario is inspired by MOTHER 3's, namely showing parts of the islands and eventually end in Frisk's hut. They will be shown sleeping at first, and then you will enter your name before they wake up. Instead of creating your own character, AETHERCREST's introduction begins with a legitimate tutorial with some quests added before a certain man interferes and messes it all up.

AETHERCREST [Episode I] - Good Morning (OST 1)

* Frisk, What's up fucker!
* How's it going?
* I haven't seen you, Since your mom died!
* House fire, Huh?
* ...
* Hey, At least she went out hot!
* SICK BURN!!!

004 - Fitness!

B: "Greetings my dear Noelle!"
N: "Oh hi Berdly! You came early too?"
B: "Nothing like an early bird already preparing for his grandiose rehearsal with his most talented companion!"
B: "Such a creative work of art must be preserved with utmost honor!"
N: "Well if you say so, fa ha ha!"
B: "Anyway, shall we begin practicing our duet, my good friend?"
N: "Actually, I think we should wait for Kris."
B: "Kris? You mean to say that you have recently added them to our band?"
N: "Sure! They can play piano in case you didn't know."
B: "So I've heard."
B: "Very well then, they may collaborate with us!"
B: "Although under ONE circumstance!"
B: "They must avoid cheating during our rivalry in Super Smashing Fighter!" (N: "Really now?")
B: "Otherwise, I'm afraid I will have no choice but to promptly remove them from our group!" (N: Hey, that's not fair!")

Deltarune was created by Toby Fox
AETHERCREST was created by https://soundcloud.com/moon5triker
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Leitmotif:
- Berdly Rejected Concept (Mixed with "Berdly" Melody A)
- Berdly (Melody A)
- Original ("Berdly Rejected Concept" Extra Melody) + Girl Next Door
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In this take, Berdly takes the role of Susie. Unlike his deltarune counterpart, He is humbler and kinder due to losing to Noelle on a spelling bee contest. Therefore he never tasted the superiority, the intelligence, and the recognition he's always desired to achieve. Although friendly and disregardful towards the societal pressure, he can still be annoying or somewhat reckless due to his poor social skill. He is just less of a rude smartass and much more focused towards his friendship with Noelle along with his geeky interests and hobbies.

I decided to make this new replacement sound more original and fitting for Berdly's new character since the last one was meant to fit more in "Susie" format. I also wanted Berdly and Noelle to be close friends from the start since I think it's much more interesting than having another Susie-Kris dilemma. I feel their friendship is rather underrated and I've seen some just make Noelle kick Berdly's ass or something with similar attitude which I find "eh...". Anyhow, the inclusion of "Girl Next Door" represents that he has a strong connection to Noelle, perhaps to the point of being dependent considering Noelle is the smarter one here. And he hopes he can impress her with something BIG so that he can finally feel 'worthy' of being the smart kid's buddy. I suppose it's akin to how "Smart Race" has "Queen" leitmotif in it due to rather similar reason. And lastly, I emphasized the "Rejected Concept" melody to symbolize that "this is Berdly's true self", and beside, he had a fear of being "rejected" if he didn't keep up with the superiority façade, didn't he? =P

AETHERCREST [Episode I] - Bluebird of Friendship (OST 5)

Noelle walks into the hospital room, causing Rudy to brighten up upon seeing her.

R: Hey, sweetie!
N: Hi, Dad!
R: How are you holdin' up?
N: I'm doing well.
R: How's recital practice comin' along?
R: Practicing your beautiful singing voice?
N: Y-Yeah, it's… coming along.
R: Hey, what's wrong?
N: Just… nervous, is all.
N: W-What if I mess up, in front of such a big audience?
N: And then everyone would laugh at me, and…
R: Hey. Listen.
R: You're not gonna mess up. You'll do great.
R: You've been practicing for weeks!
R: Besides, if you do mess up, no-one'll laugh at you.
R: They laugh one bit, I'll kick their asses.
N: Dad! You can't do that!!
N: Fa ha ha…
N: … Thanks, Dad.
R: Anytime, sweetheart.

Suddenly, her phone vibrates. An exclamation point appears above Noelle's head, and she checks her phone.

C: Waiting for you. Me and Jockington.
C: Come whenever ready.
C: Walk with us.
N: Oops! I almost forgot!
N: I gotta go, Dad, or I'll be late for my rehearsal!
R: Get going then!
N: Love you, Dad!
R: Love you too, sweetie!
R: You're gonna do great!

Noelle rushes out of the room

N: (I hope Berdly doesn't have to wait too long…)

Deltarune was created by Toby Fox
AETHERCREST was created by @moon5triker
Dialogue written by @epik-bruh
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Leitmotif:
- Girl Next Door (Intro)
- Noelle.ogg (Melody B)
- Girl Next Door (Melody A)
- Girl Next Door (Melody B)/Lost Gir(/Find Her) (Melody A)
- Snowdin Town(/Hope) (Melody B)
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In this take, Noelle Holiday and her father, Rudy Holiday, take the role of Kris and Toriel, respectively. Noelle is an amiable and merry yet timid girl who occasionally struggles with expressing her thoughts and feelings out of fear. She also has difficulty refusing orders from other people and is generally rather compliant, given that she is raised by a fairly strict and cold mother. However, her father tends to balance things out along with her older sister who is always there to comfort her.

She is known as the class' smartest student and is always willing to help anyone who's having trouble with their grade, her close friend Berdly in particular. She is easily scared by a lot of things and often gets pranked on as well as frightened by her mischievous neighbor Kris.

You get to control her mind using the star to give her an idea of what to do. Let's just say, you're Noelle's intrusive thoughts but in another whole level. Noelle can still makes her own decision, though.

Holiday Hymn doesn't replace anything. It's simply its own thing that musically portrays the Holiday Family.

AETHERCREST [Episode I] - Holiday Hymn (OST 3)

DESS: ...
DESS: Oh, great.
DESS: Look who followed me.

[※ There’s a cracked baseball bat resting on her shoulder. She wasn’t carrying it earlier.]

DESS: No, no. Let me guess...
DESS: Ms. Undyne got scared I’d make a mess and sent you to babysit.

DESS: Figures.
DESS: Feheheh... What a joke. 
DESS: Thinks I’m gonna grab a couple markers and skip back to class like a good little angel.
DESS: Instead of... you know, just walking out the front door.

[※ She eyes you up and down.]

DESS: Frisk.
DESS: ...what do you remember about me, huh?
DESS: Have you heard the rumors? You believe everything they say?

[※ Dess taps the bat against the floor.]

DESS: You aren't gonna run back and snitch, are you?

(Step... step...)
...

DESS: ...God, do you ever talk?
DESS: I don’t remember you being this-...

...

DESS: Tch. Whatever.
DESS: You're wasting my fucking time.

(Grab)

DESS: ...I could break your ribs and walk away.
DESS: And I wouldn’t regret it.
DESS: Not.
DESS: Even.
DESS: A little.

DESS: ...

[※ Her arm doesn’t move.]

DESS: ...S-Shit...

[※ She lets her bat fall to the floor.]

DESS: ...
DESS: Just...
DESS: L-Let’s get these markers already.

-
@lyrathorn

Dess

* This kid looks a LOT like you, Varik.
* Are you sure you haven't been toying with anyone lately? Heh.

Angst ~ Raine

This can be for any au you want (only if it includes Seam taking the role of Jevil), provided you give credit to me, the composer of the said song and link back to its original musical source. Please ask me beforehand through SC dm, and show me what you will be using it for.
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Leitmotives (In-order):
-Lantern/Rude Buster
-Determination
-Susie

Source of Image: https://www.deviantart.com/hezuneutral/art/Deltaswap-Jevil-Seam-773723446

[Deltarune AU][Deltaswap - Seam] FORESHADOWING CAT-ASTROPHE

Deltarune by Toby Fox
AETHERCREST by @moon5triker

Note that this is not the official nor canon version of Deltaswap. This is simply my interpretation using my own creative freedom.