Compose sheet music and piano scores in your browser with professional notation, playback, and export.
Users
184
+17 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#66K
#55K among extensions
Version
1.0.0
updated 24 Mar 2026
Users
monthly, 7 months
Latest, 15 Oct 2026:184 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 15 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Sheet Music Composer
🎼 Sheet Music Composer — Write, Play & Export Music Notation
A professional music notation editor right in your browser. Write sheet music instantly — no downloads, no accounts, no setup.
✨ KEY FEATURES:
🎵 Professional Music Notation
• Standard 5-line music staff with accurate note rendering
• Treble clef, Bass clef, and Grand Staff (Piano) support
• All note durations: whole, half, quarter, eighth, and sixteenth notes
• Accidentals: sharps (♯), flats (♭), and naturals (♮)
• Dotted notes and ties between notes
• Rests for every duration
• 10 key signatures: C, G, D, A, E, B, F, B♭, E♭, A♭
• Time signatures: 4/4, 3/4, 2/4, 6/8, 2/2, 3/8
⌨️ Fast Note Input
• Click note buttons (C D E F G A B) or type on your keyboard
• Number keys 1–5 to switch note duration instantly
• Arrow keys for sharps and flats
• R for rest, Backspace to delete, Space to play/stop
• Auto-advance to next measure when full
🔊 Instant Playback
• Hear your composition played back with synthesized piano sound
• Adjustable tempo from 40 to 240 BPM
• Volume control with visual note highlighting during playback
💾 Save & Load
• Save compositions to your browser — no cloud, no account needed
• Load and continue editing anytime
• Manage saved works with built-in file browser
📤 Export & Print
• Export sheet music as high-quality PNG image
• Print directly from the editor
• Clean white background optimized for printing
🎯 Perfect For:
• Music students writing assignments and exercises
• Composers sketching melodies and arrangements
• Piano teachers creating practice sheets
• Songwriters capturing musical ideas quickly
• Choir members learning vocal parts
• Anyone who needs to write music notation fast
🔒 Privacy & Performance
• Zero data collection — your music stays on your device
• Works completely offline after install
• Lightweight and fast — opens instantly
⌨️ Keyboard Shortcuts:
C D E F G A B — Input notes
1 2 3 4 5 — Whole, Half, Quarter, Eighth, Sixteenth
↑ / ↓ — Sharp / Flat
R — Rest
Space — Play / Stop
Backspace — Delete last note
+ — Add new measure
Ctrl+S — Save composition