Keyboard explorer
A clickable keyboard over several octaves: note names (C D E F G A B), octave and frequency per key, the tone sounds. Semitones, octave, accidentals.
Music (Gymnasium)Try itCollection
Understanding and playing music Experience it live.
Keyboard, intervals, scales, chords, the circle of fifths and groove: music theory you hear and play.
9 VisuApps
Apps
All apps. Free in your browser.
Interval explorer
Choose two tones → interval name, semitone steps, frequency ratio (fifth 3:2). Playable melodically/harmonically — consonance vs. dissonance audible.
Music (Gymnasium)Try it
Scales & modes
Root + scale (major, minor variants, church modes, pentatonic): construction on the keyboard, whole-tone/semitone step pattern, playable up/down.
Music (Gymnasium)Try it
Chord builder
Root + chord type (major/minor/diminished/augmented, seventh chords) + inversion: stacked construction from thirds, chord symbol, audible as an arpeggio/together.
Music (Gymnasium)Try it
Circle of fifths
The circle of the 12 major/minor keys at the interval of a fifth: click a key → accidentals, relative key and tonic/subdominant/dominant (T/S/D) highlighted.
Music (Gymnasium)Try it
Voicing lab
See and hear close, drop-2, drop-3, rootless, quartal and shell voicings on a piano keyboard.
Jazz harmonyTry it
Pop piano studio
Generate simple pop-inspired piano pieces with professional notation. Play through MIDI or microphone input while recognised notes are highlighted in the score.
Music (Gymnasium)Try it
Groove coach
Play to the click — on a pad, the table, a drum kit or e-drums. Every stroke is measured in milliseconds: timing track with a ±15 ms target band, tendency over the round (rushing/dragging from bar …), feedback and the next exercise. Input via microphone (analysed in the browser only), MIDI or tapping; room check and calibration against latency.
Music (Gymnasium)Try it
Conducting 3D
A conductor's hand with a baton beats 2/4, 3/4, 4/4 and 6/8 while the tip draws a glowing trail in space. The downbeat always comes from above and the baton rebounds from the beat plane, with the melodies of well-known songs lighting up in time. Cue, fermata, cut-off, dynamics and articulation show how the hand shapes music.
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