For a game that can be completed in around 3-4 hours, the soundtrack is one you’ll want to listen to for many hours beyond that.
- The first track, Lumi’s Essence,
is a cute little theme that plays when you are first introduced to Lumi. It sounds similar to a song you’d hear in the menu of an Eighth Generation Nintendo Console. - The third track, Captain Tutorial, is an uplifting theme that screams “Your adventure is beginning!”
- Likewise, track four, Candy Course, which plays on the stage of the same name, starts off your adventure on the right foot.
- Track five, Tip of the Hat, which plays in the Pinball minigame to purchase The Tutorial Hat, would fit in Super Mario 3D World.
- Track seven, Tutorial Justice! is an epic theme for an epic fight.
- The eleventh track, Ofelia, is a swingy, jazzy, Muzak-esque melody for the introduction of Lumi’s sister, Ofelia.
- Track twelve, Underground, is a somber and soothing song that balances the feelings of serenity in the aforementioned underground and the feeling of monotony that Lumi feels more and more as you go through her memories.
- Track sixteen, Big Bad Booty, is a boss remix of Booty the Bootleg, and plays during the boss fight against the Photoshop Flowey parody, Big Booty. The game parodies itself with Booty the Bootleg Bootleg, track twenty-one, which uses an actual piano soundfont.
- The forty-first track, The Beginning of the End, plays just before the climax of the game, and sets the stage for an epic finale.
- The forty-second track, The World Above, plays not only in the trailer, but also in one of the most exciting parts of the game, where you help Lumi hack your own computer.
- Track forty-three, The World Above 2 Final ver note , is a climactic theme that plays as you break into the core of your computer, and it makes the moment even more fun. It even has a dark reprise of "Lumi's Essence".
- The World Above 11 Final FINAL new Final ver note plays during the fight against final boss, the titular Outcore, and features leitmotifs from Lumi's Essence, Ofelia, Underground, the Idle Game, Booty the Bootleg, Captain Tutorial, Laifu, and Fairy Hartstronk, culminating in one of the most epic themes in the game. It has the same feel as "Last Battle" from Cave Story, being a bouncy but intense theme for a final battle against a Core. It also samples the memetic system sounds from Windows XP.
- Track forty-six, Lumi's Goodbye, a somber rendition of "Lumi's Essence", plays as Lumi gets ready to leave, create a stable time loop for herself, and explore the internet.
