Sonachord is a focused piano chord learning game for building real keyboard fluency, one chord at a time. Follow 28 structured chapters from first triads to richer jazz voicings, then test what you know with stars, progression goals, and pro challenges.

The method is chord-first: you learn how chords look, sound, and move before they become abstract theory. Visual interval guidance and ear training help you connect shapes on the keyboard with the sound you hear.

• 28 guided chapters for beginners, returning players, and ambitious learners
• Play on the on-screen piano, connect optional MIDI, or use a real piano with microphone-based acoustic detection
• Train chord recognition, intervals, voicings, and practical progressions
• Earn 1-3 stars, unlock progression goals, and take on pro challenges
• Offline-ready Steam release with no subscription and no account required
• Privacy-first: practice data stays local, and microphone/MIDI input is processed on your device