Kernel Hearts Music: Inside the Emotional 'Cataract' OST and What Players Are Saying

Why Kernel Hearts Music Is Already Turning Heads

The wait for Kernel Hearts is almost over — the action RPG finally lands September 17, 2026 — but Kernel Hearts music is already making an impact before launch. A gorgeous single called "Cataract" has been out on Bandcamp since October 2024, giving fans a first listen into the game's emotional soundscape. Here's everything we know about Kernel Hearts music so far, from the OST's track details to what players are saying about the in-game audio.

That early musical reveal matters because Kernel Hearts isn't a quiet, storybook adventure. It's a pulse-pounding co-op multiplayer roguelike where you ascend the Tower of Babel, harness powerful abilities, befriend allies, and challenge the Divine itself. Knowing that the score leans into emotional, piano-driven territory tells us a lot about the tonal balance Ephemera Games is aiming for: frantic combat on the surface, with something tender underneath.

For anyone following the game, here's a quick primer on what you're getting into:

That setup — android magical girls, biblical enemies, and a god to dethrone — sets the stage for a soundtrack that will need to do a lot of heavy lifting. And if "Cataract" is any indication, the music is up to the task.

"Cataract" — The Kernel Hearts OST Single That Started It All

The most concrete piece of Kernel Hearts music we have today is "Cataract," credited to the French artist Pretty Patterns and released on October 14, 2024. The Bandcamp release is labeled as the "Kernel Hearts OST" and it's a small but meaningful package: a vocal track and a clean instrumental version, both running just over two minutes.

Here's the full track list:

How to Get the Single

The digital album is priced at €1 EUR (roughly $1.09 USD), and a purchase includes unlimited streaming through the Bandcamp app plus high