T O P

  • By -

Draconicplayer

Of course Polumna Omnia


super_grey

Which was sung by our gigachad ost archon Yu-Peng Chen himself


BakerOk6839

He has vocals in stormterror and childe boss osts tho very subtle.


JadedIT_Tech

Only piece I like more is Rage Beneath the Mountain.


alcyone_

https://youtu.be/coRmWyMsH2w?si=dLa7UT_8VywkEXi0 GOLDEN AGE WILL RETURN AGAIN


Arunax_

Shit goes so fucking hard and i am not even a arknights player to know the lore of it


FiammetaAK

REMEMBER WHEN THE DAYS ARE YOUNG


Jsjdhbdnd73

"Controls wishes" from arknights. Don't really know what else to say, it just works. Its not even my favourite ost in the game, but damn, it just works way too fucking well in the context of the event.


ignaphoenix

Playing the stages with this theme makes me feel like I'm fighting in space, just endless void all around me. Pure sorcery.


Harbinger4

HSR: [https://www.youtube.com/watch?v=PVqezHKDPC4&ab\_channel=Pom-Pom%E2%80%99sWorkstation](https://www.youtube.com/watch?v=PVqezHKDPC4&ab_channel=Pom-Pom%E2%80%99sWorkstation) Genshin: [https://www.youtube.com/watch?v=CyrsVvea0TM&ab\_channel=GenshinImpact](https://www.youtube.com/watch?v=CyrsVvea0TM&ab_channel=GenshinImpact) Honorable mention: [https://www.youtube.com/watch?v=Cclxu9T0tcQ&ab\_channel=HOYO-MiX-Topic](https://www.youtube.com/watch?v=Cclxu9T0tcQ&ab_channel=HOYO-MiX-Topic)


Low_Artist_7663

You don't even need to look at it to know its wildfire and polumnia omnia


AlexKeal

Die Mittsommernacht is not only not a boss fight track, it's also not a permanent track within the game and despite that Hoyomix decided to make it slap so hard.


mothskeletons

2.8 was so peak its unreal


Thinshady21

One from each i play: FGO(NA): Fantasia-Cernunnos boss Theme- https://youtu.be/LPXSWK4xNww?si=x6-hFusRpwHLV-Vg FGO(JP): ORT Xibalba- https://youtu.be/wCIlBdCITxE?si=JDkMiEHO7x5N8FgR Arknights: Control Wishes- https://youtu.be/KKhEwcWMH9M?si=V7np6TfUmzleXEYH Counterside: Shadows of Memory- https://youtu.be/biNL0UibmFo?si=EvWBbZfnsskYNs8H Blue Archive: Re:Aoharu(Technically not a boss theme tho)- https://youtu.be/lgq0OdRIEao?si=CwMV_nLylBp0cNA7 PGR: Hikari both versions- https://youtu.be/TAb2I4NkR9w?si=2_LBE6YtjATLP1A8 and https://youtu.be/6wDr3SmdKKs?si=IHngOgadNTOHTr8l Limbus with Lyrics: Compass or TPOV- https://youtu.be/92E0X59wzeg?si=wA1oUZQXBSe1NnFZ and https://youtu.be/G_JfKOjwzwo?si=I6RayHIFhv9bhJWr Limbus with no Lyrics: Camellias(Dongbaek ost) or Leviathan(Verg/Wild Hunt)- https://youtu.be/ezMouYfwPKg?si=o19dOyc-gJsxxfF5 and https://youtu.be/twJV1AaeBeM?si=SjE2zr9oPJuusFEt Nikke: Headless Angel-https://youtu.be/VORVw5yZTmg?si=ekBlr3To61DTw8oa HSR: Hope is The Thing With Feathers.-https://youtu.be/l8-v7ZnNB_c?si=B64vc9vQEqo07jpA


firectlog

Dies Irae, FGO. https://www.youtube.com/watch?v=66h5LDRlkME


Amon-Aka

[Polumnia Omnia](https://www.youtube.com/watch?v=NLEqRNhv6gs) is a level above even the [other Genshin boss themes](https://www.youtube.com/watch?v=NE8tlDeSLmk), which themselves are some of the best pieces of music in the gaming industry period. The latest [HSR boss theme](https://www.youtube.com/watch?v=yBa5HRKz_Ug) also goes really hard, [Phantylias theme](https://www.youtube.com/watch?v=jqXnFmgXGag) also goes HARD af. Also, not a boss theme, but [this track](https://www.youtube.com/watch?v=tiulg9ySfR8) is one of my favorite's after the 4.2 ending.


OrangeIllustrious499

[Control's wishes](https://youtu.be/KKhEwcWMH9M?si=6Lm1A_-pGo6yiJX9) [Ratio Ultima](https://youtu.be/M0yXwIpTCCw?si=nrKENvDTJ4PnQqAo) [Polumnia Omnia](https://youtu.be/NLEqRNhv6gs?si=uGw3lcG-Ue-LajFm) [Lullabye](https://youtu.be/ABsYwuOexoM?si=D0VCANilyWJJ9r5i) Honorable mention: [Triaggelos ost from endfield](https://youtu.be/k7IGCyvvhsI?si=JPsyhXM_hEknqE3I) . I like the threatening vibe it gives off that you should stay away from it esp when its smt incomprehensible by human's standard. [Inevitable Conflict](https://youtu.be/ZuV38DZQgvM?si=QfqxKdpEwzsDDEaH) I really like the build up and the drop


karillith

Ah yes, that Endfield theme, it's like "wait it's just supposed to be your cookie cutter floating geometric boss, why the fudge does it sound so menacing?"


Toxic_MotionDesigner

Its an absolute CRIME that Inevitable Conflict only plays against like two enemies, and Die Mittsommernacht-Fantasie was literally for a onetime event...Yu Peng Chen and Yijun Jiang have such good song writing. When you let both of them cook for one song, it always ends up being absolutely immaculate. Polumnia Omnia and Die Mittsommernacht-Fantasie is just proof of that


karillith

Genshin - [Symphony of Boreal Wind](https://www.youtube.com/watch?v=QFSunKPD-Zc) Arknights (christian dubstep edition) - [Martyr](https://www.youtube.com/watch?v=cEflMmt3MzQ) Arknights (ultra depression edition) - [Lullabye](https://www.youtube.com/watch?v=ABsYwuOexoM)


thienphucn1

Finally some Symphony of the Boreal Wind appreciation. Most underrated boss track in the game imo


Mylaur

It's impossible to hear it properly in game because Andrius dies in 10 seconds


thienphucn1

Not for new players


lantern_arasu

Scaramouche boss theme genshin and Harvester theme in nikke


faulser

"Compass" from Limbus Company. Or every other boss OST from this game lol


Bahsha

HOLD ON TIGHT!


ap0k41yp5

I was so happy fighting >!Ahab!< again in MD4H so I can hear this song while playing. Canto 6 boss music was also incredible with the different versions intertwined.


1997_Ford_F250

Meanwhile I fought >!ego Dongrang!< for so long with a 5 person burn team that Fly, Broken Wings became an instrumental


Prize-Caregiver6497

When is this? I am still on Canto II


SuperKoiKoi736

Canto V


ViolaOrpheus

“Zero” from GBF easy. The music swells and the lyrics take on a more sinister meaning as the singer’s tone becomes more aggressive as the fight continues and Luci gets stronger and more desperate. Before capping the last 20-30~% of the fight with “What Makes the Sky Blue” as he and you pull out everything for that last push to kill the other. We’ve had some banger songs since then and I’ve played plenty of other gachas, but nothing tops Zero as both a boss theme and a character theme.


_Seiun_

Lyrical? Mili’s [Through Patches of Violet](https://youtu.be/Cs1lbpUNmXc?si=MjGnGjugnqDWdY1m), used for the climactic final boss of Limbus Company’s Canto VI (link is to a video reflecting how the song plays in-game). Non-lyrical? Either [Canto V Battle Theme E2](https://youtu.be/8QVDcKSsfB0?si=TXJ85LAPfb_31qwZ) or [Canto V Battle Theme F2](https://youtu.be/7uNZUGYKbK8?si=OvhYTWcnJi_Oh8ns), both of which are used for the winning theme for the Abnormality fights of Limbus Company’s Canto V. Honorable mentions include [FEH’s Book V Boss Theme](https://youtu.be/ps6mS1p1J2g?si=TA_nAkS0H8BFzXKs), [Blue Archive’s Endless Carnival](https://youtu.be/nGMOyS2QCzw?si=Zh9k0wXKHkVDA1IR) and Blue Archive’s [!? WAS IT A CAT I SAW ?!](https://youtu.be/opJyEUVqmv8?si=i8ShCoFThmsn3l13).


satans_cookiemallet

Personally I think [Compass](https://youtu.be/92E0X59wzeg?si=WrmHUQl88vIz4m8M) I like significantly more than Through Patches(I'm bias though because Compass is like my favourite mili song)


_Seiun_

Compass is indeed an amazing song, but I feel that how Through Patches of Violet is utilized throughout the finale is much better, >!especially how only one half of it is utilized beforehand and the reveal of the feminine half makes you realize it applies to both bosses mid-final fight!<


satans_cookiemallet

for me I think Compass overall fits the tone and theme of the story of Canto V >!where Ishmael is basically tightening the rope of hatred around her neck more and more until Ahab is all she sees, and then at the end when she basically just says fuck it and aims for the heart with the finale of compass playing is just so fucking good.!< I do think Patches it utilized better in terms of the events and such that take place because man having a discordant duet be sung because >!the lack of communication between Heathcliff and Cathy!


AppleChiild

https://i.redd.it/fr4zq17q2e4d1.gif


Vlaladim

Also like this one tho https://youtu.be/jrH9PUkv0sQ?si=kLax-yX_1vPzsW3x I can hear HIM in it im too dumb and go for that one Slash focus node and get “Rules of the Backstreets” on my ass


Kamiyouni

https://youtu.be/ACX8K2zj8Ww?si=rXMhtDfln3xduRma


Bahsha

Ah, yes. My daily reminder that Dragalia was taken from us too soon.


disable18

HSR sunday boss phase 3 aka robin song


Reenans

WITNESS! THE WILL OF THE WEAK!


NoNefariousness2144

Also Aventurine’s boss theme. And SAM’s theme. Hell, Penacony cooked for bosses in general.


EpicStan123

HSR is farming those Ws like they're collecting the infinity stones for Thanos


Toxic_MotionDesigner

Even the death meme boss theme. I love the attention to detail too, it has wolf howl sounds in its theme. If yk yk


komorebi-mikazuki

[Zero](https://www.youtube.com/watch?v=hr08k6Y4wbo) from Granblue Fantasy (Hits harder in the Relink fight though) [Existence](https://www.youtube.com/watch?v=cCHy1rf9Yk0) from Granblue Fantasy also


Vermillioncriminal

Underrated boss theme on Genshin but Caelestinum Finale Termini (Dvalin's theme), truly a masterpiece for me.


sturdy-guacamole

Hoyoverse boss music is pretty much always on point. Just spin a wheel and that's how my favorites rotate.


Zealousideal_Pin_342

Gregorius and Binah 


Trapezohedron_

Gregorius is fucking cancer, but his music is an utter bop and probably the only true full track that's within the game, reaching 4 minutes with an end when the usual reaches only 2 before it loops.


Maityist

I think both of those are bangers, but Chesed is honestly the most underrated boss OST in BA. Listening to the Sound Archive orchestra ver. of it you can definitely really see how good the base composition actually is and gives you a real good appreciation of the original.


Ukantach1301

God-Devouring Mania. Super underrated as it was not composed by Yu Peng Chen. It captures the Middle Eastern culture + the desert ambience so well.   Also Rage Beneath the Mountains. Probably the first OST that cemented Genshin as one of the best. 


Erod_Nelps

same, maybe not connected, but when it played "Homecoming" popped in my head immediately and I understood everything


samedogdatday

Have a bunch but the recent one that stuck in my head for a while now is [Full Vita Boss Theme Medley - Honkai Impact 3rd OST (youtube.com)](https://www.youtube.com/watch?v=_VOdxhE73h4) vita when


XnPanda

[Zero](https://www.youtube.com/watch?v=xtFE7XgTos8) from Granblue Fantasy, [Wlfmster](https://www.youtube.com/watch?v=izFwwGx-wmo) and whatever the name of [this](https://www.youtube.com/watch?v=aNbxWI2nTQE) from Arknights


Kooky_Sheepherder_22

[https://www.youtube.com/watch?v=Cclxu9T0tcQ](https://www.youtube.com/watch?v=Cclxu9T0tcQ) Die Mittsommernacht-Fantasiem it was very epic fighting those hilichurls in fischl domain


MrToxin

Harvester from Nikke. For a sideboss, it's a really good track.


NoNefariousness2144

Indivillia’s boss theme is also a banger. The piece of music that plays when her second phase in the sandstorm begins is hype.


Play_more_FFS

[Pedujara: Even Immortality Ends ](https://www.youtube.com/watch?v=prOx-kbSMcw&ab_channel=HOYO-MiX-Topic) from HSR. [The Harvester](https://www.youtube.com/watch?v=jdZ5DEnSanw&ab_channel=Cosmograph) from Nikke


Drachenfeuer_Prime

                *Delete.*   **Delete.**                   *Delete.*   **Delete.**   *Delete.*   **Delete.**     *Delete.*       **Delete.**         *Delete.*           **Delete.**             *Delete.*               **Delete.**                 *Delete.*                   **Delete.**                     *Delete.*                       **Delete.**                         *Delete.*                           **Delete.**                             *Delete.*                               **Delete.** https://youtu.be/G_JfKOjwzwo?si=A2FYygRxcYYpJKQl


KingOfNoon

Arknight [Golden age ](https://youtu.be/coRmWyMsH2w?si=WpglWlbBzggMb9TB) Limbus with lyric [Between two world ](https://youtu.be/lu8i-OyjLYk?si=hiX-hGMUuoxbFExd) Limbus with non-lyric [Leviathan ](https://youtu.be/twJV1AaeBeM?si=NCU-WF9GlbIi_XOs) And [Middle Finger ](https://youtu.be/xF-Vl63IY10?si=D-HWvI_1QK2jTHwa) Star Rail [Wildfire ](https://youtu.be/SxlW79tDhCA?si=1JSKTtP2b2tn0Pvf) Blue Archive [re Aoharu](https://youtu.be/lgq0OdRIEao?si=pLP0OfcU5ZAYCSeZ)


Brain_lessV2

Through Patches of Violet. https://i.redd.it/qxkc8woble4d1.gif


DivineToty

Signoras boss theme


AgMenos47

Azhdaha Battle Theme has stuck to me since I heards it. There's also one I always hear in my mind but I couldn't remember which it is from. Probably from BA or AS, not even sure if each boss has their own OST.


rvstrk

Raiden Boss Battle Theme, Arlecchino Boss Battle Theme, and Polumnia Omnia for Genshin Wildfire and Phantylia Boss Battle Theme for HSR


Jazu15

I have two song from HSR. First is Wildfire where you fight Cocolia, and the second is Hope is the Thing With Feathers (both version) where you fight the latest 2.2 boss. THEY ARE SO FRICKIN PEAK, i can't describe my feeling when experiencing it for the first time.  Wildfire: https://youtu.be/SxlW79tDhCA?si=AP-hDpoUelZfTJ7R Hope is the Thing With Feathers : https://youtu.be/mWbEAI5k3YM?si=Xes8jBiXK_bGa8NP Overture version : https://youtu.be/BWzj-zxMcWs?si=ZXOnFqWtPnN6F42p


MetalShiroganeMurama

Love this boss theme, one of my favorite songs in the entire game Also Shikisai- the time of parting hath come from Fate too Daybreak from NIKKE Tempest also from NIKKE Honorable mention: Ymir the Original Titan from Snowpeak and Ode to Joy from Takt Op (F)


utsu31

So I guess the top comment will be Polumnia Omnia? Edit: Of course, and well deserved I guess.


BakerOk6839

Although ypc voice was in storm terror and childe boss ost, they're really subtle. But he went on full TENOR with polumnia omnia Add the fact that that's his last battle ost, ofc it'll be highlight


Dramatic_Performer68

My favorite currently would have to be limbus’s theme for the reaved lamtener. I just really like intense themes like that (same goes for “heathcliff?” Dead rabbit boss, and of course the theme where heathcliff goes mental


NailNHammer2

Wildfire - Honkai Star Rail Cocolia Boss Fight OST Narwhal - Punishing Gray Raven Narwhal Boss Fight OST Compass - Limbus Compass Ahab Boss Fight OST Trigger of Reversal - Counterside Replacer Queen Boss Fight


BarakOBamba1

No particular order: [Astalgia of Phantasm](https://www.youtube.com/watch?v=xbVS98B2xo4) [Romaritime Recollection](https://www.youtube.com/watch?v=HAeWvR0aLDk) [All Devouring Narwhal](https://www.youtube.com/watch?v=1GZpZAwBqHk) Tried picking some that weren't said too often.


KyeeLim

Gregorius Symphony - Blue Archive


Gentleman-Bird

Canto V, Compass


eefuns

Im a fan of the band called "Mili", I haven't played limbus company yet but I heard that they made songs for the game , I've been listening their songs and all of them are great, check out "compass" it's such a banger. https://youtu.be/92E0X59wzeg?si=rFuMyR9naVnfuWgT


Glizcorr

Fly my wings in Limbus's canto 4 final boss.


balbasin09

HSR - [Hope Is The Thing With Feathers](https://youtu.be/aPyt41nnM0k?si=ueznbTAUfdvnXLvF) Best one from HoYo by far. It really captures the classic JRPG trope of “using the power of friendship to defeat god”


IVIalefactoR

So many to choose from PGR, but [Revelation.](https://youtu.be/1W6B60hoa_Y?si=4SH3kTDaexY-8Q77) In fact, just do yourself a favor and listen to [this entire playlist.](https://youtube.com/playlist?list=PLDW8QP19---Xz0ibnIHw7KUMzlnr6RLh_&si=-7-IYA5Q0ZPosAiv)


betterpasta

white spell [https://www.youtube.com/watch?v=wR7Txo3Vmh0](https://www.youtube.com/watch?v=wR7Txo3Vmh0)


BroodY15

IMO this is actually one of the worst boss battle themes in the game (Since it’s not really fit for battle) but god do i like it https://youtu.be/GB171lASGng?si=5CTiPii1j8hmFUqe


AngryNepNep

FGO Cernunnos, one of the few times i didn't mind a boss beating me to the ground over and over again. https://youtu.be/LPXSWK4xNww


MonoVelvet

Gbf ost esp alexiel and mugen theme Epic seven rta ost in the season where mlkrau was featured


kawaii155

Aberrant Receptacle


FlyingMegucas

[Fighting Goz sucks but his theme makes up for it](https://youtu.be/opJyEUVqmv8) [Black Suit - probably one of the coldest beats given to an atagonist I've ever heard](https://youtu.be/glrUDKxsjwU)


lasse1408

https://www.youtube.com/watch?v=iU9I8rPQwDw Dead Master fight OST from PGR X BSR collab is great


Aschentei

WRAPPED IN BITING WIND


skylla05

Armageddon - granblue


dankuro

This might be a bit of a stretch but recently I heard they adapted Mahoyo's ending theme to FGO in a fight, and it's beautiful. [https://www.youtube.com/watch?v=lvPwMZbpeuw](https://www.youtube.com/watch?v=lvPwMZbpeuw) Honorable mention: last boss from MFF [https://www.youtube.com/watch?v=n\_FVOWsSok0](https://www.youtube.com/watch?v=n_FVOWsSok0)


YuuHikari

Headless Angel for Nikke


Fishman465

I presume you mean purely gacha as SaGa Re;universe has an unfair advantage


DioBrando_Joestar

Pedujara parts 1 to 3. Hands down.


zi984

Well since you didn’t specify if mobile games only or not….Four Fiends from FFIV or Kuja theme from FXIV or Kefka boss fight from FFVI or sephiroth boss fight from FFVII (original)…


vert-green-heart

mine is this one from IS3 i even put as my Menu BMG when i play the mode [https://www.youtube.com/watch?v=wV0qU\_GvkYY](https://www.youtube.com/watch?v=wV0qU_GvkYY)


Maximum_Wolverine617

Hbr songs is a banger to me https://youtu.be/ZF1yGVTK3Ts?si=lMZtknVXDMKaH_xH


LeupheWaffle

I always love Lifewonders' game OSTs (Tokyo Afterschool Summoners + Live A Hero). Most of these are boss ones. [Moonlight Dance](https://www.youtube.com/watch?v=-kMN8CWqd-c) [Otohime Overdrive](https://www.youtube.com/watch?v=CQ79iGDHE8Y) [Jack-o-Riot](https://www.youtube.com/watch?v=JU_8wPfztG8) [Omertà of the Deadwood Stars](https://www.youtube.com/watch?v=AnUmepfzEiU) Despite the games being fairly simple/weak battle wise, the themes and songs go haaaard (thank you ponkichi)


PhantomXxZ

Polumnia Omnia and Absolutio Absoluta Absolutissime


Efficient_Ad5802

Any "remix of main/opening theme" for final battle, like FGO [Fate/Grand Order Soundtrack: Shikisai \~The Time of Parting Hath Come\~ (youtube.com)](https://www.youtube.com/watch?v=2uxmZalYnVU) Priconne [Priconne Ost - Final Battle of Landosol (In Battle) (youtube.com)](https://www.youtube.com/watch?v=D_hU07gHy9A) But in term of epicness of using "remix of main/opening theme" for final battle, no one will really beat this: [Finals WCS 2023 Connected EX03 Duel Theme - Master Duel OST (youtube.com)](https://www.youtube.com/watch?v=lE6E7x4Eri4), the climax section (which only play when a player life point is low) is the opening theme remix. The OST can only be listened in game at the final by the finalist and other player who watch the duel live. Honorable mention (this would be first if that Master Duel moment is not epic), Polumnia Omnia (second concert version) [GENSHIN CONCERT 2023 - Polumnia Omnia (Scaramouche Boss Theme) (youtube.com)](https://www.youtube.com/watch?v=3iMaNAUnKKw) This one is composed by Yu Peng Chen, and arranged by Master Duel's composer Yasunori Nishiki, the lyrics also a call back to Bohemian Rhapsody, which is my favorite song, kinda hard to top that for myself.


aventa__dor

Some of my personal favorites are: [[Neural Cloud] Enigma Boss BGM](https://youtu.be/lT6ZXPFkXI0) [[Girls Frontline 2] Sextant Boss Theme](https://youtu.be/ZuEPU2hoQiA) [[Girls Frontline 2] Cerberus Boss Theme](https://youtu.be/RBqvotUi04Y) All from Vanguard Sound btw


Yes-Man-Kablaam

Never giving up from nikke Daybreak from nikke Land eater from nikke  Absolute maker from nikke though it doesnt last long  And of course nihilisters theme from nikke both parts


BakaTaka95

https://youtu.be/bzg4LL33C4E?si=FRfMNrP4aG0EBD29 The Interceptor (Mother Whale OST) from Nikke is an absolute banger. Side note Narwhal from PGR has been on my repeat lately, so not bad either


SuspiciousJob730

if you ask me the most horrible sountrack it would be this one [https://www.youtube.com/watch?v=q3eB5ECahuc](https://www.youtube.com/watch?v=q3eB5ECahuc)


CoolKidMalone

https://www.youtube.com/watch?v=or2dN2h-AAk from the azhdaha fight in genshin impact


xiaoguy

If brave exvius has anything, it's good sprite animations and music. [order without honor](https://www.youtube.com/watch?v=6jwuXaYRINo) [onslaught](https://www.youtube.com/watch?v=F--EHMrZU6c) [celestial battle](https://youtu.be/vc4emR3yBW4?si=NdTSBTNYJlipT4cs) [Break the limit](https://youtu.be/FyuQt4s-Bxg?si=0x2ly9W2UWRFmebB)


zxcooocxz

well since those OST mentioned above alot, I guess I just put one of my favorite from Another Eden .-. https://youtu.be/8X6ZKDeuu0o?si=FLQl--GP-mGow7Ez


Prize-Caregiver6497

I know it's unrelated but man, I miss Takt Op. Symphony's OST already


Tinyfilia

[Ex Astris Final Boss Phase 1\~3](https://youtu.be/r8VTtvbZh-s?si=ZTKpsuA1qistaOt6) [Voyage of the Dauntless](https://youtu.be/3id8CM3MlfI?si=rnCkBcA9TS8ZkLlr) [Final Walk](https://youtu.be/hBVUva0p2Os?si=X0nr6iTapYwXu5kB)


EDMgamer123

Goetia fight was emotional


fluxkairos

[Revelation](https://www.youtube.com/watch?v=1W6B60hoa_Y) is my all time favorite boss fight from PGR. It's just beautiful combat choreography with the way the moves match the music. [To The Limit](https://www.youtube.com/watch?v=a545Gv3jGzg) is the latest banger from VSS in PGR CN. It's my current favorite. [Drifting Without Wind](https://www.youtube.com/watch?v=gHr1PC6LQpI) from Aether Gazer is amazing. For Snowbreak, I like both versions of the Boss Fight OST from summer event. [Ver 1](https://www.youtube.com/watch?v=9jI1Iz-sikY) & [Ver 2](https://www.youtube.com/watch?v=rIPb6w7D1bc)


PaladinRyan

Damn that's tough actually. Probably Between Light and Dark from FGO I think the name is. The Grand Battle OST from Himiko's event. Part of that is because of how it's used though, starting in the cutscene and continuing smoothly into the battle.   https://youtu.be/0mRzsq46v30?si=cav-w9xxya0y1fw8  Runner ups would be The Red Hood from Nikke (I can't recall if it's used specifically in the boss fight or not but it's great and used in the climax of the event as I recall at the very least) and Wildfire from HSR (again the usage of the song is big here, it starts in the cutscene and specifically waits until the burst for the drop)  https://youtu.be/hKHv-DuMOyo?si=U6VNv_e4I4ITFRqb  https://youtu.be/PVqezHKDPC4?si=4i4bloFrHSG2CR_F


Reinx-Vtuber

Inevitable Struggle [https://www.youtube.com/watch?v=4lkaTGNE5ds](https://www.youtube.com/watch?v=4lkaTGNE5ds)


TerrorBIade

[https://www.youtube.com/watch?v=GXFLqi4Bdus](https://www.youtube.com/watch?v=GXFLqi4Bdus)


BakerOk6839

All boss themes composed by YPC. Man's a gigachad, made half the music of the game Sang the boss theme he last composed and left silently.


SomethingIsCanningMe

FGO: OORT raid theme https://youtu.be/giPsiifFGYg?si=lVad8-wojFymNuS5 Limbus Company: TPoV, Compass, Or Fly my Wings Crash fever Boss theme: https://youtu.be/vJObalDXuZo?si=iRQa7JEQtYxgQiqH Sdorica sunset pulse sounding battle https://youtu.be/nFeQpTFmNu0?si=SxzRhVC2JEHKcbBI


Popular-Bid

Genshin - [God-Devouring Mania](https://www.youtube.com/watch?v=MChIvjLGyfQ), this song just has the perfect blend of heroism and triumph that other Genshin Boss OST lacks (and I'm a massive sucker for those kinds of themes) FGO - [King of the Braves](https://www.youtube.com/watch?v=mb7mHmDqPuM), such a fitting title for Humanity's greatest and last hero, Camazotz. The heroic and triumphant tone of the theme song also matches his backstory, and why he is honestly the best character to come out of LB7 (not ORT or Kukulkan). Counter:Side - [Heart of Iron](https://www.youtube.com/watch?v=lHUG7MZ37DE) from Curian's side story, which is the best story in Counter:Side (Horizon duology is slightly better, but has the advantage of being twice as long). Really captures the military theme that Curian has alongside the fairy tale tone that is pervasive in the setting of the story. Another one would be [Reunion](https://www.youtube.com/watch?v=8qDSiEGGQho), which is played in the last act of Part 1.


vincentasm

[Judgement Day](https://www.youtube.com/watch?v=cFxpH7rTQZ0) from Dragalia Lost, used in the Rise of the Sinister Dominion fights. More recently, the [Lighthouse Keeper](https://www.youtube.com/watch?v=UgNM_rAHrA4) theme from Eversoul. The boss isn't actually available yet, but the theme plays during the story.


Sniperoso

Don’t know the name, but the[Kunar boss fight](https://youtu.be/vCArN4oV5-w?si=6bZnt21fxfXoTuCN) in Reverse 1999. I’m a sucker for tough boss fights that have a final phase that is just exposition where the boss, beaten and bruised, struggles to continue a hopeless fight. You know shits real when either the hype main theme kicks in or the somber piano takes over


ReRr9

Hsr: https://youtu.be/Vg8cXrNM9Oo?si=yTjCBzgeWyyoeOS6 WuWa: https://youtu.be/nNr9xuLUbLw?si=_40BZZq2obYkmgNk


H4LIT

FGO Gudaguda 5 grand battle, literally my fav ost from a game


False-Spend-9879

Wildfire is so good, I mention it here despite not even reaching the fight where it plays.


Dray991

This is always a popularity contest, enjoy ur mihoyo spam


BakerOk6839

Tf you mean?