To address all of you asking where a certain grinning skeleton is, please try referring to the in-video annotations or the timestamps in the video description before you comment. I intentionally have hidden the final bosses of all three routes until their themes play, as Undertale is still fairly recent, and many people may still not have gotten to them yet. I reiterate, please refer to the annotations or timestamps BEFORE commenting asking where the final bosses are. I will be deleting such comments from this point on. Thank you, and sorry if this comes off a little passive-aggressive.

55:48 : me planing an argument *5:35** : me in an argument*

Pacifist: A literal goat god Neutral: A demonic flower god Genocide: A goofy ass skeleton.

5:35 definitely the most emotional boss music ever.

I think my favorite thing about a lot of these songs is: A) How often you can come back to them and not get bored of them, and B) How several of the songs start with very simple 8-bit tunes, and suddenly DROP into gorgeous masterpieces

Asgore pacifist: Lets fight. Asgore neutral: Lets fight. Asgore genocide: Would you like a cup of tea?

PACIFIST FINAL BOSS: A god goat with 7 human souls NEUTRAL FINAL BOSS: A gigantic scary photoshop creature with 6 human souls GENOCIDE FINAL BOSS: A lazy skeleton who loves ketchup and having breaks

Neutral Route 0:00 Napstablook - Ghost Fight 1:50 Toriel - Heartache 05:35 Greater Dog - Dogsong 06:56 Papyrus - Bonetrousle 08:59 Mad Dummy - Dummy! 13:56 Undyne - Spear of Justice 23:08 Mettaton - Metal Crusher 25:20 Muffet - Spider Dance 28:48 Mettaton EX - Death by Glamour 34:50 So Sorry - Wrong Enemy ?! 39:40 Asgore Dreemurr - ASGORE 44:55 Omega/Photoshop Flowey - Your Best Nightmare 48:55 Omega/Photoshop Flowey - Finale True Pacifist Route 00:00 Napstablook - Ghost Fight 01:50 Toriel - Heartache 05:35 Greater Dog - Dogsong 06:56 Papyrus - Bonetrousle 08:59 Mad Dummy - Dummy! 13:56 Undyne - Spear of Justice 23:08 Mettaton - Metal Crusher 25:20 Muffet - Spider Dance 28:48 Mettaton EX - Death by Glamour 34:50 So Sorry - Wrong Enemy ?! 36:53 Amalgamates - Amalgam 50:53 Asriel Dreemurr - Hopes and Dreams 53:53 Asriel Dreemurr - SAVE the World Genocide Route 01:50 Toriel - Heartache 05:35 Greater Dog - Dogsong 06:56 Papyrus - Bonetrousle 17:52 Undyne the Undying - Battle Against a True Hero 25:20 Muffet - Spider Dance 33:21 Mettaton NEO - Power of "NEO" 55:48 Sans - MEGALOVANIA Unused 1:00:53 Song That Might Play When You Fight Sans

00:00 - Ghost Fight (Napstablook) 01:50 - Heartache (Toriel) 05:35 - Dogsong (Greater Dog) 06:56 - Bonetrousle (Papyrus) 08:59 - Dummy! (Mad Dummy) 13:56 - Spear of Justice (Undyne) 17:52 - Battle Against a True Hero (Undyne the Undying, GENOCIDE) 23:08 - Metal Crusher (Mettaton) 25:20 - Spider Dance (Muffet) 28:48 - Death By Glamour (Mettaton EX) 33:21 - Power of 'NEO' (Mettaton NEO, GENOCIDE) 34:50 - Wrong Enemy !? (So Sorry) 36:53 - Amalgam (The Amalgamates, TRUE PACIFIST) 39:40 - ASGORE (Asgore Dreemurr) 44:55 - Your Best Nightmare (Photoshop Flowey, Phase 1) 48:55 - Finale (Photoshop Flowey, Phase 2) 50:53 - Hopes and Dreams (Asriel Dreemurr, Phase 1, TRUE PACIFIST) 53:53 - SAVE the World (Asriel Dreemurr, Phase 2, TRUE PACIFIST) 55:48 - Megalovania (Sans, GENOCIDE) 1:00:53 - BONUS THEME (Unused)

no matter who you are, i think everyone can agree that this game has the closest thing to the perfect soundtrack

This sound track was made 4 years ago and people are still commenting everyday. Tips hat to Toby

The unused theme (the song that might play when you fight sans) is Sans' actual theme while Megalovania is your theme since when you get there, you aren't fighting Sans anymore, Sans is fighting you.

00:00 My Classes 08:59 Homework 55:48 My Test 13:56 How much I learned 05:35 How much I remembered

1:52 what we learned 29:53 whats for the homework 56:12 whats for the test 5:36 remember from the classes 44:51 the parents seeing my test 25:20 me running away from the 𝑩 𝑬 𝑳 𝑻 14:00 me finally facing my parents head on 17:55 parents getting serious 1:00:53 epic fight ensues 55:48 me grabing the clutch flintstone gummies to get a power up 33:21 final stand starts 28:49 me after spanking my dad instead of him spanking me 34:51 me after seeing the comments on my comment STOPPP SAYING LIKED THE COMMENT AM GOING CRAZY, btw updated list cuz yall got some fire ideas

I remember watching this video back when you could still click on the screen and it'd take you to a specific timestamp.

I’m just gonna say, this game is a timeless masterpiece.

battle against a true hero really shows how brave undyne is. it isn't only a complete banger but an absolute heartbreak to see undyne turn into a puddle of determination while this song played.

Asgore neutral: die! Asgore pacifist: die! Asgore genocide: British mode activated!

I pray for those who didn't buy the Spider Donut at the beginning of the game.

Okay, there being no transition between Asgore and Flowey scared the life outta me, good work on hiding a legitimately good scare in this kind of video of all things.

So let me get this straight: by being a souless murderer you are rewarded with the 2 most iconic bossfights in the game, but when you be the nicest person ever to everyone, even the people who REALLY want to kill you, you are rewarded with manmade horrors beyond our comprehension???? Toby, what the hell???

Glamburger

Reading comments here, I came to a finite conclusion- every single theme in this game is underrated according to at least all of you

44:55 Just scares me to death every time. Flowey's theme is definitely the most horrifying theme I've ever heard And then Flowey's laugh at 45:11 can never NOT give me the creeps

1:50 Teacher asks you for homework 33:21 You thinking what to do 36:53 Homework 44:55 Test 34:50 What you remember in class 5:35 What you did at home

You can't deny that this game has an outstanding soundtrack.

Nobody: The pile of clothes: 5:44 The same pile of clothes at 3am: 44:55

0:00 Ghost Fight (Napstablook) 1:50 Heartache (Toriel) 5:35 Dogsong (Greater Dog) 6:56 Bonetrousle (Papyrus) 9:00 Dummy! (Mad Dummie) 13:56 Spear of Justice (Undyne) 17:52 Battle Against a True Hero (Undyne the Undying, GENOCIDE) 23:08 Metal Crusher (Mettaton) 25:20 Spider Dance (Muffet) 28:48 Death By Glamour (Mettaton EX) 33:21 Power of 'NEO' (Mettaton NEO, GENOCIDE) 34:50 Wrong Enemy !? (So sorry) 36:53 Amalgam (The Amalgamates, TRUE PACIFIST) 39:40 ASGORE (Asgore Dreemurr) 44:55 Your Best Nightmare (Photoshop Flowey, Phase 1) 48:55 Finale (Photoshop Flowey, Phase 2) 50:53 Hopes and Dreams (Asriel Dreemurr, Phase 1, TRUE PACIFIST) 53:53 SAVE the World (Asriel Dreemurr, Phase 2, TRUE PACIFIST) 55:48 Megalovania (Sans, GENOCIDE) 1:00:53 BONUS THEME (Unused)

I've never even played Undertale but I've been listening to this mix for literally days... thank you so much whoever made this compilation! And also Toby Fox obviously!

Death by Glamour is a fucking masterpiece there's so much raw emotion in the music Toby created with synths and computerized tunes its actually beautiful. It's what old game designers had to go with mere decades ago and still had managed to pour their heart and soul into it. Music like this truly is timeless

Me to my therapist: I'm scared of mettaton My therapist: oh yeah Me: demonic screaching

I actually recently decided to look at this game, and fell in love with the characters and the overall decision-making capability of the game. Then, the SOUNDTRACK. I am OBSESSED. So much so, I make my kids listen to this with me. So now, I can be working on something and I'll just hear Dogsong being hummed... or the Spear of Justice screamed from a room. I just love it so much, it fills me with Determination.

We hope can all agree that this game will forever be one of the greatest indie games ever made

Me normally: ha no I don't dance *death by glamour comes on* Me: TIME TO STRIKE A POSE, BABY

death by glamour, battle against a true hero, ASGORE, and finale are def my favourite battle themes from this game idk if i consider it to be one of my 'absolute favourites' along with the ones i mentioned but spider dance gets stuck in my head a lot

I've never played the game before, but to be honest the themes' songs have been extremely popular even to most people like me, always give me a feel of goosebump and nostalgia every time the songs play

The fact, that the greater dog theme is labeled as a boss theme is just...amazing

Neutral: A hellish creature you couldn't imagine in your worst nightmare Pacifist: A meaningful final enemy, the deceased son of the king now resurrected into the most powerful being ever Genocide: skelly

Who here still listening to these bangers in 2024?

*Death By Glamour Is Just SO UNDERRATED*

True Pacifist final boss: Literal god of hyperdeath Neutral final boss: horrible photoshopped monstrosity with the power to destroy save files and make his own Genocide final boss: lazy skeleton

Photoshop Flowey: a giant plant cyborg monster with the power of six human souls Asriel Dreemurr: a reformed plant who is now a god in the form of a goat with the power of 7 human souls Sans: a stocky skeleton who loves puns and pranks with the power of 1 monster soul And yet who's the most terrifying?

In every other games youtube-soundtrack-video, the video has a "Most replayed"-Moment shown, if you go with the mouse through the time.... but not in this one, because in this game every soundtrack has some lovers! *.*

I think spider dance has to be the best theme out of them all simply because no matter what run you go for, genocide or pacifist, it always plays and I mean it's just a banger

Five instances you must never trust flowers: Undertale Terraria Cuphead Minecraft Super Mario

GENOCIDE Undyne: a spear themed armor-plated badass who will not die GENOCIDE Mettaton: A human extermination robot with cold ruthlessness *GENOCIDE Sans: a big-boned skeleton who drinks ketchup*

is it just me or......... ARE ALL OF THESE SONGS SUCH BANGERS These songs are SOOOOO GOOOOD

Rewatching this video made me realise how fucking amazing Spear of Justice is. Like,how is this not one of the most talked about song in the soundtrack? The way it starts so bluntly and fiery and then becomes more regal and valorous as the song goes on gives me life. The whole track is phenomenal.

i just realized "battle against a true hero" stands for "bath" undyne is woshua confirmed

You're surging with Bravery. You've served Justice. You're touched by Kindness. You hold on to Patience. You've upheld your Integrity. You're braced with Perseverance. You're filled with Determination.

This is the exact video I used to listen to the boss themes on my way to and from school when I was 14/15, now i've come back at 21

This is the best undertales soundtrack video, instead of literally just putting the names of the bosses or a picture of the boss, you added in special effects for a few, and even categorized the ones from genocide path or pacifist path, good job man no wonder it’s your most popular video

Toby Fox has to be one of the only people to make a song about fighting a demonic photoshopped beast of a flower that actually pleases the ears.

5 years later and this soundtrack is still amazing

This will hold a place forever in my heart

This is the video that started my slow descent into madness around 5 years ago. Thank you

34:50 P.E. teacher 17:52 His grandma

"hey, Joes a great person." "Huh, who's Joe?" 45:11

8 years later and I come back to this wow I remember listening to this exact vid all the time...

Coming back and looking at this video where it all started (how I first discovered undertale) feels great

Fun fact: Bonetrousle existed before papyrus did. It was intended as the main battle theme for Deltarune (as he started work on that before Undertale) but then he just gave up on deltarune for a while and decided to use bonetrousle (although of course this isnt what it was originally named) in undertale as to not let it go to waste.

*Scrolling through the comments section while listening to these songs... *It fills you with determination

7 years and this is still good

My favorite parts of song Napstablook - 1:08 Toriel - 4:23 Papyrus - 7:28 Dummy - 9:00 (toda la canción) Undyne - 14:18 Undyne the undying - 19:37 / 19:47 (tmb) Metatton - 23:28 Spider Dance: 25:46 Metatton EX - 30:17 So Sorry - 35:27 Amalgams - 37:36 / 37:57 (las dos están muyy buenas) Asgore - 39:49 Photoshop Flowey - 46:22 / 48:07 Hopes and dreams - 50:53 (toda la canción) Megalovania - 57:40

It took me until now to realize that all of the genocide run special bosses have something going on with their eye. Undyne has a spear coming out of her eye Mettaton neo has one of his eyes covered in darkness And sans... Well we know about sans

Plot twist: Actually MEGALOVANIA is the character's theme because everytime you start a fight you act first and the theme of the character plays, but Sans is the only character that attacks first. Btw there is a song called "Song that should play when you fight Sans" cuz you never fight him, he fights you instead

This is the video that introduced me to undertale😭💜 thank you so much for introducing me to what would eventually become one of my FAVORITE video games to this day!!!💜

7 years later im still listening these songs with so much emotions 😢❤

Flowey: giant deformed monster aberration Asriel: evil magic invencible goat Sans: a skeleton with a hoodie

Mad Dummy: Can I copy ur homework Napstablook: Just MAKE IT GO INSANE so it is not obvious. Muffet: Dont mind me taking "some" answers [edit]

lol im glad you still included stmpwyfs boss theme despite never technically being used in game

This is my favourite video to put on while doing homework/studying.

Today i downloaded undertale I completed the genocide run then i got home and started playing undertale why is the fbi at my door help

Pacifist boss: *Cosmic Goat that has unexisting colors in its wings* Neutral boss: *A random colorized creature that is made of random photos and a tv* Genocide boss: *Ketchup*

Undyne's theme is probably my favorite. So heroic and full of hope.

I had this suggested to me after playing Undertale Yellow, and got curious what else this person had uploaded. The sheer difference between the view counts between this and most of their other uploads is staggering. You got this with millions, and most others barely crack a few hundred.

Neo Mettaton sounded like it had so much to offer, in his mind he was the ultimate being nothing could beat him in that form. Except a child with a toy gun.

Who needs friends?! *I'VE GOT KNIVES!* ... ... ... I'm... out of knives.

17:50 こんなに心揺さぶられるメロディラインは無い 本当にありがとうと言いたい

"Your best nightmare" is a ✨MASTERPIECE✨ for me. It's as terrifyingly insane as the Photoshop Flowey himself.. I adore it💥

Me: You can't make a entire 101-song soundtrack from 17 themes. Toby Fox: *Observe.* EDIT (4 Months Late): Yeah, yeah, I know, 90 and 8 aren't the correct numbers, stop bugging me about it, aight? I fixed them. Anyway, I recently found a good remix of Megalovania you can check out here: kzfaq.info/get/bejne/isefaZp6yeCXhZc.html

It's great to look back at this game and remember a time when it wasn't a meme.

I’m not an undertale fan but I was amazed I knew all of these songs. I truly made a great impact in modern internet!

sans standing in an empty box with a red outline while megalovania plays is so fucking ominous i love it

Can you believe Toby wrote all of these AND programmed the whole game on his own? Holy shit. Guy's got talent.

It's crazy, scrolling through these comments I've realized how underrated 'Battle Against A True Hero' is.

I think everyone can agree greater dog has the best soundtrack

Every ost is just a banger !

I like how NEO's theme is just the same thing but looped a few times since you don't need that much for a fight that lasts 4 seconds

I like how Toriel and Asgore have some similar attacks and similar melodies in their themes.

It been so long, still this musics still fills me with determination

1:50 never realised that a simple pixelated game can make me this emotional

Fun fact: the unused one was actually called “The song that might play when you fight sans” but it never actually plays in the game it is only hearable in the OST

How many tines did you remix 'your best friend'? Toby Fox: Yes

My top best Undertale songs: 5- Megaloviania 4- Bonetrousle 3- Your Best Nightmare 2- Hopes and Dreams 1- DOGSONG

These are the 2 themes that get stuck in my head the most: Ghost Fight (Napstablook's theme) Dogsong (Greater dog's theme)

Am I the only one here who still hasn't reset the game, just because Flowey told me not to.

My brain for the first 55 minutes of the 1 hour test 5:35 My brain during the last 5 minutes: 5:35 I have lost all control over my life

As a fan of Undertale’s main inspiration (and Toby’s work), it really is neat hearing a song made with tons of Earthbound songs, and one of the enemies being based off of the final boss of it

This was my gym playlist for about a whole year for some reason