Your Hands. Your Sound.
Play Music With Your Hands
Turn simple hand gestures into chords, beats, and a music video you can share. No instrument, download, or music experience required.
Free to play · No account required · Camera processed locally
An Instrument You Already Know
Your Hands Are the Instrument
Gesture Synth uses your browser camera to track your hand in real time. Hold up one to four fingers to trigger different chords from a musical progression that always sounds harmonious — no music theory required.
Move your hand up or down to shape the energy while drums, bass, and visuals respond to every gesture. When you are ready, capture a 15-second performance and share it with anyone.
How It Works
From Gesture to Music in Seconds
Enable Your Camera
Allow camera access so Gesture Synth can follow your hand. Camera frames are processed inside your browser and are not uploaded or stored.
Show a Gesture
Hold up one to four fingers. Each gesture activates a different chord that fits the current music style.
Move With the Music
Move your hand higher or lower to shape the energy while automatic drums and bass build around your chords.
Record Your Performance
Capture a 15-second vertical music video with your gestures, visuals, and sound combined.
Simple Controls
Four Gestures. Endless Combinations.
Hold up one to four fingers to trigger different chords. Each gesture maps to a harmony that fits the current style automatically.
✋ Hand Height
Move your hand higher or lower to shape the energy of the music. Higher adds brightness and intensity; lower brings warmth and calm.
Choose Your Sound
One Instrument. Three Different Moods.
Pick a style before you play. Each one changes the chords, rhythm, bass, and visual atmosphere to match its character.
Dreamy
Soft, spacious, and uplifting.
Float through warm synth chords, gentle drums, shimmering details, and airy visual trails.
Dreamy Pop92 BPM
Lo-fi
Relaxed, warm, and slightly imperfect.
Play mellow chords over dusty drums, soft bass, and a subtle vinyl-inspired atmosphere.
Lo-fi Beats78 BPM
Cinematic
Deep, dramatic, and expansive.
Build powerful moments with wide chords, low percussion, dark textures, and sweeping visual energy.
Cinematic Pulse84 BPMCapture the Moment
Turn Your Performance Into a Music Video
Record a 15-second vertical video that combines your hand gestures, animated visuals, and the music you created — all in one shareable clip.
- 15-second recording
- Vertical 9:16 format
- Music and visuals combined
- Works with camera or keyboard mode
- Download and share when ready
Private by Design
Your Camera Stays on Your Device
Gesture Synth processes your camera feed directly in the browser. Nothing is uploaded, stored, or sent to a server. Your hand tracking data never leaves your device.
- Camera processing happens locally
- No camera upload
- No microphone access
- No account required
- No cloud storage
No Camera? You Can Still Play.
Keyboard mode lets you control chords with the number keys and pause with the space bar — no camera required. Move your mouse or drag on the screen to shape the energy, just like hand height.
It is the same musical engine, the same visual experience, and the same recording capability — just without hand tracking.
Try Keyboard Mode
Made for Curiosity, Not Complexity
Instantly Playable
Start creating without downloading software, setting up an account, or learning an instrument.
Designed to Sound Musical
Every gesture selects a chord from a carefully arranged progression, helping different combinations stay harmonious.
Responsive Visuals
Hand trails, particles, colors, and pulses move with your gestures and the rhythm.
Ready to Share
Record a short performance with synchronized music and visuals directly in your browser.
FAQ
Frequently Asked Questions
What is Gesture Synth?
Gesture Synth is an online musical instrument controlled by hand gestures. It uses your camera to recognize how many fingers you are holding up and turns those gestures into chords, accompaniment, and visual effects.
Do I need to know how to play music?
No. The chords, bass, rhythm, and timing are designed to work together automatically. You can start experimenting immediately, even if you have never played an instrument.
Does Gesture Synth upload my camera video?
No. Camera frames are processed locally in your browser for hand tracking. Your live camera feed is not sent to our server or stored by us.
Does it record audio from my microphone?
No. Gesture Synth does not need microphone access. The audio in your recording is created by the music engine inside your browser.
Can I use Gesture Synth without a camera?
Yes. Keyboard mode lets you control chords with the number keys, pause with the Space bar, and adjust energy with your mouse or touchscreen.
Which devices and browsers are supported?
Gesture Synth works best in current versions of Chrome, Edge, and Safari on devices that support camera access and browser-based media recording. Available recording and sharing formats may vary by browser.
Can I download my music video?
Yes. After recording, you can preview the result and download it to your device. On supported mobile devices, you may also be able to open the system sharing menu.
Is Gesture Synth free?
Yes. You can play, record, and download your performance without creating an account.
READY TO PLAY?
Make Your First Chord
No sign-up, no downloads. Just your hands and your browser.
Start PlayingNo download · No account · No music experience required