Music (SSBU)

The music in Super Smash Bros. Ultimate includes a wide variety of tracks. It consists of pieces taken directly from other Nintendo games and games with third-party representation, nearly all of the remixes from previous Super Smash Bros. titles, and brand new arrangements. In total (including DLC), there are 1,068 tracks available to listen to in the Sounds menu, making Ultimate's music library the largest in the series,, larger than all the other games' libraries combined.

Music can be listened to in the game using the Sounds feature. Much like in Brawl and SSB4, the Sounds menu is accessible by default and does not need to be unlocked. However, several tracks must be unlocked themselves via various methods. Others only appear in the list after specific purchases are made, and one song (Dearly Beloved -Swing Version-) requires the player to own a Challenger Pack (11) and have save data from a separate game (Kingdom Hearts Melody of Memory). Note that it can also be added to playlists in the Vault section. Max number of tracks are unlimited.

The first 5 tracks (from Lifelight (JP) to Final Destination) are listed on top of the Sound Test list, then followed by the Super Mario Bros. series. All the other tracks (Mob Smash onwards) are listed on the bottom, right after the Other category.

Total Songs: 113 

Mario
Total Songs: 91 

Total Songs: 15 

Total Songs: 28 

Total Songs: 45 

Total Songs: 25 

Total Songs: 14 

Total Songs: 38 

Total Songs: 18 

Total Songs: 33 

Total Songs: 26 

Total Songs: 14 

Total Songs: 52 

Total Songs: 2 

Total Songs: 13 

Total Songs: 11 

Total Songs: 14 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 21 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 10 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 5 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 27 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 26 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 11 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Sonic
Total Songs: 20 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 31 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

PAC-MAN
Total Songs: 11 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 38 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

FINAL FANTASY VII
Total Songs: 11 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 11 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 34 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 11 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

DRAGON QUEST
Total Songs: 8 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 10 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

FATAL FURY
Total Songs: 50 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 18 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 7 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Total Songs: 39 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

KINGDOM HEARTS
Total Songs: 10 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Other
Total Songs: 107 <div class="contentbox mw-collapsible mw-collapsed" data-expandtext="Show music" data-collapsetext="Hide music">

Tracks not listed in Sounds
The following tracks are present in the game, but are not listed in the Sounds menu. Note that some of the names may not be official. Besides the tracks listed below, there are also 52 victory themes available in the game.

Total Songs: 8

Additionally, the individual songs found in the ', ', and  tracks are treated as separate in-game, and can play individually under certain circumstances, such as spirit battles.

Tracks that do not return
While a majority of the music tracks from previous installments return, there are a small number of tracks which do not return in Ultimate, the total number of missing tracks are 48.
 * Super Smash Bros. [excluding short jingles]
 * Opening - Super Smash Bros.
 * Character Introduction Stage - Super Smash Bros.
 * Battle Results - Super Smash Bros.
 * Ending - Super Smash Bros.
 *  - Super Smash Bros. Melee [original version] (the Brawl remix is incorrectly labeled as the original in Ultimate, and the original is left out)
 *  - Super Smash Bros. Melee [Brawl remix]
 * How to Play - Super Smash Bros. Melee [Brawl remix]
 *  - Super Smash Bros. Brawl
 *  - Super Smash Bros. Brawl
 *  - Super Smash Bros. for Nintendo 3DS
 * Opening - Super Smash Bros. for Wii U
 * Smash Tour: Map (5 Remaining Turns)
 * Super Mario Bros.
 * Donkey Kong
 *  [Brawl remix]
 * The Legend of Zelda
 *  [original version]
 *  [original version]
 *  [original version]
 * Metroid
 *  [original version]
 * Kirby
 *  [original version]
 * Pokémon
 *  [SSB4 remix]
 * Kid Icarus
 *  [original version]
 * Pikmin
 * Metal Gear
 *  [original version]
 * Sonic
 * PAC-MAN / Namco
 * Other
 *  [original version]
 *  [Brawl arrangement]
 *  [original version]
 *  [original version]
 * Kirby
 *  [original version]
 * Pokémon
 *  [SSB4 remix]
 * Kid Icarus
 *  [original version]
 * Pikmin
 * Metal Gear
 *  [original version]
 * Sonic
 * PAC-MAN / Namco
 * Other
 *  [original version]
 *  [Brawl arrangement]
 *  [original version]
 * PAC-MAN / Namco
 * Other
 *  [original version]
 *  [Brawl arrangement]
 *  [original version]
 *  [original version]
 *  [Brawl arrangement]
 *  [original version]

Tracks only used in trailers
While most of the songs used in the trailers (both for fighters and for Mii costumes) are available in-game, there are a few exceptions and the total number of tracks only used in trailers are 32.
 * Super Smash Bros.
 * Main Theme (E3 2018 Version)
 * Super Mario Bros.
 * Two Worlds Collide
 * Beware the Forest's Mushrooms
 * Fire Emblem
 * Those Who Sow Darkness
 * The Spirit Dais
 * Animal Crossing
 * Town Hall
 * Xenoblade Chronicles
 * Drifting Soul (Violin Version)
 * Counterattack [original version]
 * FINAL FANTASY VII
 * Electric de Chocobo
 * Persona
 * Life Will Change (Instrumental Version)
 * The Spirit
 * DRAGON QUEST
 * Overture - DRAGON QUEST III Symphonic Suite
 * Adventure - DRAGON QUEST III Symphonic Suite
 * FATAL FURY / SNK
 * THE KING OF FIGHTERS '94 Opening (Title)
 * ART of FIGHT [original version]
 * Banquet of Nature [original version]
 * Stormy Saxophone 2 [original version]
 * ARMS
 * ARMS Grand Prix Official Theme Song [original version]
 * Tekken
 * Dist Thins Out [original version]
 * KINGDOM HEARTS
 * Hikari -KINGDOM Orchestra Instrumental Version-
 * Other
 * Town Stages
 * Beginning (VF2)
 * Ezio’s Family
 * Fallout 4 Main Theme
 * Symphonic Druaga
 * Grand Prix Battle Stage - Central
 * N.M.H.
 * Graveyard
 * Like a glint of light
 * Dragonborn
 * Public Enemy (Battle Theme 1)
 * At Doom's Gate

Trivia

 * Compared to Super Smash Bros. 4, in which songs from past Smash titles and other games were abridged for space compression (such as ' and '), many songs in Ultimate are notably included uncut, and can last much longer as a result. This is especially noticeable with the Challenger Packs, which include uncut vocal tracks such as ' (four minutes and 55 seconds) and ' (just over six minutes, the longest track in the series).
 * According to Masahiro Sakurai, this was because the game's improved compression technology allows for tracks to take only a quarter as much space as they did previously while keeping their original quality. Despite this, the abridged tracks from SSB4 were not reverted to their full-length versions.
 * Had this compression technique not been invented before release, the music tracks would have not fit onto a Nintendo Switch cartridge and Sakurai considered releasing all the music as free downloadable content.
 * The Mario Kart, Wario, Star Fox, Ice Climber, Game & Watch, Kid Icarus, Punch-Out!!, Sonic the Hedgehog, and Bayonetta franchises are the only series from previous games to have not received any new remixes. The Pac-Man series could also be counted if the other new Namco remixes are excluded.
 * However, the Sonic the Hedgehog series' own music style influenced two new remixes made in Ultimate by Sonics two main composers, Jun Senoue and Tomoya Ohtani, as stated by them on Sonics official Japanese website.
 * Final Fantasy and Xenoblade Chronicles previously lacked new remixes until the release of and /, respectively.
 * Of the aforementioned franchises, Wario, Ice Climber, Game & Watch, Kid Icarus, Punch-Out!!, and Bayonetta are the only series to have received no new music tracks altogether. The Pac-Man series could also be counted if the other new Namco tracks are excluded.
 * Excluding victory themes, Dragon Quest and Kingdom Hearts are the only series represented by a fighter without any Smash-original remixes in Ultimate.
 * ARMS is the only series to take all of its music from a single source, while it, Final Fantasy, and Kingdom Hearts, are the only series to take all of their music compositions from a single game of origin, as all other single-game universes belong to the "Other" category. Prior to Challenger Pack 8, Final Fantasy also held the distinction of all music originating from the same source.
 * The Fatal Fury franchise has the most new remixes out of the universes introduced as DLC, with there being 17 total.
 * MEGALOVANIA, Floral Fury, and Burning Town are the only DLC music tracks to be included with a Mii outfit (Sans, Cuphead, and Shantae, respectively).
 * Incidentally, these are all songs from indie games.
 * Counting tracks from other SNK series, Fatal Fury has by far the most music tracks of any third-party series in both Ultimate and the entire series in general, with 50 total.
 * Sonic the Hedgehog, with music originating from 16 different games, has the most titles of its own series represented by music of any third-party series in both Ultimate and the series in general.
 * Ultimate is the first Smash game since the original in which none of the new remixes are unlockable.
 * With 10 vocal songs, Sonic the Hedgehog has more vocal tracks than any other series in both Ultimate and the series in general.
 * Sonic the Hedgehog, Final Fantasy, and UNDERTALE are the only series in Ultimate and in Smash as a whole to have all of their remixes not owned by Nintendo. Instead, they are owned by Sega, Square Enix, and Toby Fox, respectively.
 * Metal Gear and Street Fighter also have certain remixes owned by their owners, Konami and Capcom U.S.A., respectively. However, all other remixes from those series are owned by Nintendo.