CHOOSE YOUR
SOUND.
One keyboard. A whole room of instruments.
Choose a sound below, plug in your USB MIDI keyboard and play.
- 01 Plug in your keyboard
- 02 Connect & allow access
- 03 Pick an instrument
Use Chrome on a school computer. Headphones recommended.
Find your instrument
What will you play?
8 instruments · Real recorded samples
Piano
Click Piano to load your first sound.
Try it here, too.
Click the keys or use A–K on your computer keyboard.
A chord, at a glance
Find a chord.
Choose a chord. Find the coloured keys. Play them together.
C
C major
Play C + E + G together.
What is this chord made of?
A semitone is one step to the next piano key, black or white. An inversion changes which chord note is lowest. Try the Position menu to see another way to play the same chord.
Explore chord symbols in Open Music Theory ↗First time here? A few things to help.
Using a USB MIDI keyboard
Connect your keyboard to the computer before clicking Connect keyboard. Choose Allow when the browser asks for MIDI access, then select an instrument. Your headphones plug into the computer.
No sound?
Wait for the instrument to finish loading. Check this page’s volume, the computer’s volume and your headphones. Press Hear a preview to check the sound. If the preview works, reconnect your keyboard.
Keyboard not showing?
Try Chrome on a desktop or laptop. Reconnect the USB cable, then click Connect keyboard again. If permission is blocked on a school computer, ask your teacher or IT team.
Playing expressively
Play harder or softer to change the volume on a touch-sensitive MIDI keyboard. A connected sustain pedal works too. The octave buttons move only the on-screen and computer keyboard.