Martin Rumenov Holy Wow Studios is turning up the volume on its musical mayhem with the first official DLC for the beloved rhythm game Trombone Champ. Three new crossover song packs have arrived on Steam for PC and Mac, each paying tribute to iconic indie hits: UNDERTALE, DELTARUNE, Celeste, and Pizza Tower.
And for trombonists who prefer their notes in 3D, Flat2VR Studios is joining the fun with a Celeste Song Pack release for Trombone Champ: Unflattened—bringing the VR experience to Meta Quest, SteamVR, and PlayStation VR2.
Honking Through Indie History
This DLC drop celebrates some of the most memorable soundtracks in modern indie gaming. Trombone Champ players can now honk along to tracks from UNDERTALE and DELTARUNE, climb the emotional heights of Celeste, or blast through the high-speed chaos of Pizza Tower. Each pack was crafted to honor the original compositions, keeping their unique spirit intact while adding the signature absurdity Trombone Champ is known for.
The Celeste Song Pack
Inspired by Madeline’s ascent up Celeste Mountain, this pack includes 10 carefully edited tracks from Lena Raine’s acclaimed soundtrack. Each piece balances precision and perseverance—mirroring the “one more try” mindset that defines Celeste. The playlist includes fan favorites such as “First Steps,” “Resurrections,” and “Reach for the Summit,” each adapted for Trombone Champ’s quirky note-bending gameplay.
The same 10-song selection is available for Trombone Champ: Unflattened, letting VR players join in on the climb with full spatial immersion.
UNDERTALE + DELTARUNE Song Pack
Toby Fox’s universally adored music officially joins the party with 14 tracks from UNDERTALE and DELTARUNE. From “Megalovania” to “BIG SHOT,” these tracks deliver a mix of nostalgia, challenge, and charm. Holy Wow describes this as the “most demanding” pack of the three, built to test even seasoned rhythm game players.
Read also our review of the game.
Pizza Tower Song Pack
Rounding out the collection is the Pizza Tower Song Pack, featuring 14 energetic tracks from Tour De Pizza’s fast-paced platformer. This pack mirrors Pizza Tower’s manic, cartoonish momentum, rewarding quick reflexes and fearless brass-blasting. Fans can expect highly challenging charts designed for those who thrive on speed and chaos.
Pricing and Availability
All three song packs are available now on Steam for $7.99 USD each. The Celeste Song Pack is also live for Trombone Champ: Unflattened on Meta Quest, PlayStation VR2, and SteamVR—offering the same mountain-climbing soundtrack in virtual reality.
About the Studios
Holy Wow Studios, a two-person team from Brooklyn, is known for its offbeat sense of humor and wildly inventive games, including Trombone Champ and the Icarus Proudbottom series.
Flat2VR Studios specializes in adapting beloved flat-screen titles into immersive VR experiences, pushing the boundaries of how players experience their favorite worlds.
