I've compiled others playlists from Splatunes 1,2 & 3, Octotune, Smash Bros & MK8 remixes, and the live performances. Excludes the SFX tracks. Will keep this up to date as more music/lives come out.

Splatoon Music

Activator’s Greatest Hits

Songs from both Splatoon 2, OE, 3, Side Order, Rain World (Downpour Included!), and OneShot.

Sploon’n Rain Tales

ALL CSIDE

Spy Kids: All the Time in the World in 4D (Original Motion Picture Soundtrack)

Hammer Hands

Now or Never

Headhammer

Triple Dip

Paintscraper

From Splatoon 3
I do not own this!!
All rights belong to Nintendo

Splatune 3 - Crater Eighters Routine

Splatune 3 - Two Shadows in the Sun

Splatune 3 - Clickbait (Demo)

Splatune 3 - I’m Octavio (F34RME Remix)

Ego Overboard (Splatoween) // 上げ潮ノッテモーテル（Splatoween）

DISCLAIMER: I do not own this song this was uploaded for personal usage and will be deleted if the song is uploaded by James onto SoundCloud. Please look at the original on YouTube - https://www.youtube.com/watch?v=CAb_bCtKuXg

TheOdd1sOut - Life Is Fun - Ft. Boyinaband (Official Music Video)

Splatune | Splatoon ORIGINAL SOUNDTRACK

Kraken Up

Seaskape

Ink or Sink

Splattack! (Jam Session)

Opening

Hop (Original Motion Picture Soundtrack)

The Pink Berets

ARMS Grand Prix Official Theme Song Smash Ultimate Remix

Tea For The Tillerman

Father And Son

Posting Splatune 3 music! https://soundcloud.com/im-alien-564431021/sets/splatune-3  for the whole playlist! Follow my Alt for the rest of Splatune 3 music! https://on.soundcloud.com/5xwrx7gx6o7XZKvq8

Splatune 3 - Clickbait (Demo)

Splatune 3 Unoffical