The Sound of Piano

A Hardcore Keyboard Rhythm Game

Action Casual Indie Rhythm

About This Game

A hardcore keyboard rhythm game featuring pure piano tracks. Every note you hit generates a real key sound for a true piano response. Designed for intermediate players and beyond, use our unique Skill Test algorithm to discover your rating. No AI-generated music, just raw human-crafted tracks.


This project started without a grand vision, it was born from a veteran player's need to break the monotony of 4-key play. It was built to provide a dedicated environment for 6-key adaptation, focusing on high-response performance where the music lives only through your touch. No input, no sound. Only precision completes the performance.


Made by rhythm nerds for rhythm nerds. There is no big-studio fluff here. Everyone involved, from the developer to the testers, is a dedicated player who lives for keyboard rhythm games. Experience the result of our shared passion today.

Key Features

100% HUMAN Artistry

Every single track was composed by human hands, with zero AI assistance. Experience the depth and soul that AI simply cannot replicate. Feel the genuine human touch in every note.

Hand-Polished Charting

We never stop testing and refining the experience. Every chart is 6 key based hand-polished to ensure the most satisfying tactile flow. We are constantly working to push the limits of fun and engagement.

Pure Rhythm Focus

"Great music should be defined by its core rhythm and melody, not by flashy production." This is why we stripped away everything but the raw sound of the piano.

Free Play Mode

6 Key, 4 Key, 2 Key support - Play at your own pace and master the tracks your way.

Skill Test Mode

6 Key, 4 Key, 2 Key support - Use our unique skill test algorithm to discover your true rating and track your progress.

True Piano Response

Every note you hit generates a real key sound for a genuine piano playing experience. Feel the connection between your fingers and the music.

OUR TEAM

Our team, from the developers to the artists and testers, are all passionate rhythm gamers. While we each have different favorite styles and areas of expertise, we share the same deep passion for rhythm games.


For example, one of our team members is a 6-key main who clears insanely difficult charts, while another is a 4-key user obsessed with perfect accuracy, even achieving a 14-combo chain within a ±3ms window on a game from their personal collection.


We build the games we want to play first.

RECENT EVENTS

v2026070901 Regular Update - MIDI Converter

July 9, 2026
vSTB2026070901 Regular UpdateWe are absolutely thrilled to introduce our brand-new feature: the MIDI Converter! You can now add MIDI files that you own the rights to, generate custom charts, and enjoy endless gameplay. Please note that this is a strictly legacy-style auto-generation feature that ope...
View on Steam →

v2026070401 Patch Notes

July 4, 2026
vSTB2026070401 Patch NotesSong Select Scene: Currently at 60 tracks, pushing towards our goal of 100. Thanks!Thank you for enjoying the sound of piano!
View on Steam →

v2026070301 Patch Notes - Bug Fixes & Improvements

July 3, 2026
vSTB2026070301 & vDEMO2026070301 Patch NotesGame Scene: Lane Gaps (Gear Margin) - You can now completely close/remove the gaps between the lanes in the settings.Game Scene: Opacity (Gear Opacity) - Added it so changing the opacity now only dims the background lanes, keeping the notes fully visible a...
View on Steam →
← Back to Gallery