About Keybloom

Four instruments

Choose a xylophone (bright and wooden), a marimba (warm and mellow), a glockenspiel (clear, ringing metal) or a piano (soft and resonant). All sounds are generated locally in your browser, with no recordings to download.

Play with keyboard or mouse

Click or tap any bar, or press the computer key shown on it. Enable “Sharps and flats” to reveal the extra notes and their keyboard shortcuts.

Ranges and sharps

For percussion, pick 1, 1½ or 2 octaves from C4 and turn on “Sharps and flats” for the extra notes. Piano includes black keys, 1 to 4 octaves and a starting-octave choice. Its colored key edges, from red Do to purple Si, can be switched off.

Chords and sheet music

Play several notes close together and Keybloom names the chord, such as C major or D minor. Open the sheet music to see what you play written on a treble staff, with chords stacked together.

Getting started

1. Choose an instrument.
2. Pick an octave range.
3. Click a bar or press Z, C and B together for a chord.