Swapped Rhythms was created and owned by: https://soundcloud.com/punniester-master_2019
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Swapped Rhythms is an Undertale AU which essentially, character motif swaps with their other respective motif, for instance: "Fallen Down" with "Heartache", "Determination" with "Bergentrückung", etc...
The creator has also designated that the character designs and attributes are remodeled: Sans wearing a black tank top and ostensibly trousers, his flashing eye presented in his right orbit instead of his left, and a special feature on his left hand waving a blue glint. The aforementioned aspects are revealed earlier on here: https://soundcloud.com/punniest-master_2017/swapped-rhythms-megalovania
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The tracks composed may or may not be official though.

Youtube version: https://www.youtube.com/watch?v=yRcbsS_rdgQ&list=PLB71Dd48fmYs3-DEQirQnQxnRo6kX1SsE

Undertale/Deltarune AU - Swapped Rhythms (Moon's Musical Rendition)

This is a bit of a different anthology playlist, this time focusing on my top favorite "Undertale"/"Track 71" AU tracks.

Top Favorites: Tales of the Fallen

Swapped Rhythms is created by @punniester-master_2019!

Alt Playlists:
https://soundcloud.com/a-profile-url/sets/swapped-motifs
https://soundcloud.com/a-profile-url/sets/undertale-swapped-rhythms
https://soundcloud.com/a-profile-url/sets/deltarune-swapped-rhythms

Undertale/Deltarune - Swapped Rhythms (ONLY tracks exclusive to Swapped Rhythms!)

Swapped Rhythms is created by @punniester-master_2019!

Alt Playlists:
https://soundcloud.com/a-profile-url/sets/swapped-motifs
https://soundcloud.com/a-profile-url/sets/undertale-deltarune-swapped-rhythms
https://soundcloud.com/a-profile-url/sets/deltarune-swapped-rhythms

Undertale - Swapped Rhythms (ONLY tracks exclusive to UT Swapped Rhythms!)

Swapped Rhythms is created by @punniester-master_2019
Check em out! They make really great music, along with every other musician in this playlist! ^^

Alt Playlists:
https://soundcloud.com/a-profile-url/sets/undertale-deltarune-swapped-rhythms
https://soundcloud.com/a-profile-url/sets/undertale-swapped-rhythms
https://soundcloud.com/a-profile-url/sets/deltarune-swapped-rhythms

Undertale/Deltarune Swapped Rhythms (+Other Tracks with Swapped Motifs and etc.)

Art by @the_freaking_weirdo

*A long time ago...
*Before everything fell apart...
*There was another kind of monster...
*Stronger, and more powerful.
*They were called...
*The "Dragor".
*They were the protector of monsterkind.
*They were like... god to us.
*One day, the last of their species was brought into this world.
*"REX".
*Despite their rash bearing, they were a born guardian.
*Until one day...
*A human fell down in the Sanctuary.
*And REX was there to bring the human back to the castle
*Overtime, REX and the human became best friends.

*One day...
*The human fell ill.
*The sick human only had one request.
*To see their human family on the surface one last time.
*There was unfortunately nothing we could do...
*The next day...
*The human died...
*Their soul immediately emerged in the air and persisted from shattering.
*REX quickly grabbed the soul and absorbed it.
*They transformed into a beast that everyone fears.
*REX flew up the stormy sky.
*Everyone around the mountain could hear their roar... 
*Their grieve...
*The humans were frightened to witness the wrathful beast.
*Mages showed up and used their magical power to put down REX.
*REX fought back, many lives were loss.
*More powerful mages managed to overpower REX.
*REX fell from the sky and crashed into the palace of New Hope!
*REX turned into dust after they lost all of their health.
*Their dust scattered across a pile of mushroom.
*Our QUEEN and KING watched the dragon fell.
*The KING has had enough of this tragedy.
*Knowing that the humans have taken away our guardian.
*the KING declared war.
*He wanted to wipe out the existence of humanity.
*And let us all rule the world in peace.
*The QUEEN however, was disgusted by his action.
*The QUEEN banished the KING to the Sanctuary.
*We were all terribly shocked to hear the news!
*Overtime, the QUEEN who once was kindhearted...
*...turned into a cold and intimidating ruler.
*We all began to lose hope...
*We all began to stray further from freedom...
*With everything lost, we became more and more unyielding.
*Every human that falls down shall be killed.
*And that we will start the war if the QUEEN doesn't want to.
*We have to stay determined!
*We won't let anything destroy our path!
*We can't give up!
*This is for our future!
*Prepare for the "Rise of Monsterkind"!
*Become one of us...
*And I promise you.
*You will find happiness among our people.
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Undertale was created by Toby Fox
In an alternate universe, 'Underswap' was created by Temmie Chang
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Leitmotif:
- Ruins/Waterfall/Another Medium/CORE (basically almost every area theme)
- Ruins
- Reunited
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Waterfall swaps with New Home/Ruins, Monster Kid and Frisk swap with Asriel and Chara, definitively. United, monsterkind shall prevail!

☂ Water Under the Bridge ☂

Flowriel

I don't know, I thought this would be a good idea.

Last Goodbye In The Style Of Once Upon a Time

{Swapped Rhythms} Fallen Down

"FRISK, ALLOW ME TO TELL YOU ABOUT SOME COMPLEX FEELINGS. FEELINGS LIKE... WELL, MAYBE WE SHOULD START AT THE BEGINNING."

Do not reupload to other sites! Read IF here: http://invertedfate.com Thumbnail by @fmswhomakesmusic.

This replaces "Inverted Fate". Why the title change? [AU Name] as a song title is boring and the new title fits the context better and is wordplay. I like wordplay. Also, I deliberately stuck to mostly 16 bit sounds. c:

[Inverted Fate AU] Fate of the Fallen

[Undertale: Swapped Rhythms] Enemy Approaching

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.
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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...

This replaces "Fallen Down (+ Reprise)"

Swapped Rhythms was created by: https://soundcloud.com/punniester-master_2019
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Also first "Fallen Down" recreation! I mostly used the "Heartache" instrumentation [Proteus] for this because using the original instrumentation would not be as fun as this to compose. Anyways... here's the original Fallen Down for SR: https://soundcloud.com/punniest-master_2017/swapped-rhythms-fallen-down
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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: Couldn't find it unfortunately

Youtube: https://youtu.be/R289B4DJPas

[Undertale AU][Swapped Rhythms - Toriel] Heart of Kindness (+ Reprise)

This replaces "Menu"

Swapped Rhythms was created by: https://soundcloud.com/punniester-master_2019
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I tested the new "Magical8bitplugin" VST and I'm honestly really digging it! Anyways, here's my 2nd "Start" remix after the one I composed for my "Chara and Asriel Swap" project!
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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://wolven0ne-universe.tumblr.com/post/176778132058/an-endlessabyss-guys-ill-open-commissionssss

Youtube: https://www.youtube.com/watch?v=v_CkezkS1Qo&feature=youtu.be

[Undertale AU][Swapped Rhythms] Select Screen (Full)

This replaces "Your Best Friend"

Swapped Rhythms was created by: https://soundcloud.com/punniester-master_2019
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Thought I could add more creativity into this.
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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://www.deviantart.com/75312350312/art/flowey-668975632

Youtube: https://youtu.be/n5ilewHFvBc

[Undertale AU][Swapped Rhythms - Flowey] Flowey's Theme!

This replaces "Undertale (Track 71)"

Swapped Rhythms was created by: https://soundcloud.com/punniester-master_2019
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Check out the entire playlist of Moon's musical rendition of Swapped Rhythms here: https://soundcloud.com/thesecondstrike/sets/undertale-au-swapped-rhythms

[Undertale AU][Swapped Rhythms] Undertale the Musical

This replaces "Ruins"

Swapped Rhythms was created by: https://soundcloud.com/punniester-master_2019
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Check out the entire playlist of Moon's musical rendition of Swapped Rhythms here: https://soundcloud.com/thesecondstrike/sets/undertale-au-swapped-rhythms

Youtube: https://youtu.be/V-a3WxsFHIY

[Undertale AU][Swapped Rhythms - Area] Relics

This is not for an 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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Time to say goodbye to this account as I've finally run out minutes! Also, here's a special closure to it as well as an early 500 follower milestone! Also, I'll be taking a break from music-making and focus more on drawing and spriting for some au production. Expect more "Sensetale" content by then!
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Leitmotives (In-order):
-Don't Forget/Friendship
-Legend
-The Chase
-Field of Hopes and Dreams
-Susie and Lancer mix
-Beginning/Once Upon a Time

Source of Image: https://dearty-beloved.tumblr.com/image/179703862838

[Early 500 Followers][Deltarune Motifs ITSO Undertale] Legend of Our Heroes

Underswap was created by Temmie Chang

This replaces "Undertale (Track 71)"

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So! It's settled then, Chara and Asriel swap places, same goes to Kris and Frisk! Thank you for voting, have a nice day! Also... the leitmotif "Home" sounds sort of similar to "Beta Undertale" ain't it?
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Leitmotives (In Order):
-Home
-Escaped Chasm (by Temmie Chang) - House (Modified)
-Dweller's Emprty Path (by Temmie Chang) - Flying Through A Starry Sky
-Ruins (Ending Part, Modified)

[Undertale AU][Underswap - New Home] Inside the House

You still have no idea who I am... Ok some things about me, just a really busy 16 year-old guy who's spontaneously producing au tracks. I take requests ocassionally or when i have more free time. i work on many aus (including someone's au) and several UT fangames. I make roleswap au tracks a lot more than crossover ones. I mostly make death by glamours, battle against a true heroes, heartaches, and asgores because those are my favorites and really fun to make. I don't make megalos (really sorry but I'm just not really into that) though I make custom genocide run final bosses at some point.

And here's my discord: MoonStriker#0730

QnA:

Q: Do you have any AU?
A: Yeah, I have: Rolled Cycle (Swapspin), Last Hope, and Underswitched. "Will I make songs for one of theses aus?" Someday, yeah. 
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Q: Can I use your musics for my au?
A: Sure! If the description of the certain music says that, then yes! I'm wary about Deltarune aus, though.
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Q: Do you have any song project?
A: I consider "Chara and Asriel swap" to be my primary music project. There's more such as "Chaos Kings" and "Doused Flames". Upcoming project might be "Toriel and Asriel Swap" or "Mettaton and Asgore Swap". I'm not sure, but you can decide which one too based on what you're interested with.
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Q: Do you take request?
A: Yes, but that depends or it'll take some time to actually do it.
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Q: What is your favorite UT music?
A: For battle theme: Battle against a True Hero goes to number one! Death by Glamour goes to second! And finally... ASGORE goes to third! Last but not least... Heartache or Spear of Justice? I don't know, both are on-par to me =P As for area theme, Waterfall and Another Medium for the win!

[Undertale AU][Swapped Rhythms] Undertale the Musical

MoonStriker (Archive II)