ADSR envelope
Shape and hear the attack, decay, sustain, release of a synth sound; the envelope (time→loudness) drawn. Presets pad vs. pluck.
Music (Gymnasium)Try itVisuApps
Music (Gymnasium) Learn interactively.
Interactive music VisuApps for the curriculum — matching the example course Music Grade 9 (Baden-Württemberg). Many with sound via Web Audio.
18 VisuApps
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Chord builder
Root + chord type (major/minor/diminished/augmented, seventh chords) + inversion: stacked construction from thirds, chord symbol, audible as an arpeggio/together.
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The harmonic series
Root → partials f, 2f, 3f … with intervals; individual overtones switchable (additive synthesis). Timbre = mixture of the partials, audible and visible.
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Sonata form
An interactive timeline: exposition (main/secondary theme), development, recapitulation, coda. Clicking a section shows themes and key.
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Film music: mood mixer
The same leitmotif sounds cheerful, threatening, sad or heroic depending on tempo, major/minor, instrumentation and dynamics — the mood technique in film.
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Guitar explorer
Steel-string, classical and electric guitar at true dimensions on stage: string × fret gives the note, the frets get closer towards the body, fret 12 halves the string. With chord shapes, a note finder, a capo and physically modelled sound.
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Interval explorer
Choose two tones → interval name, semitone steps, frequency ratio (fifth 3:2). Playable melodically/harmonically — consonance vs. dissonance audible.
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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.
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Meter & measure
A metronome/pendulum with a pulse graphic: strong vs. weak beats in 2/4 · 3/4 · 4/4 · 6/8. Tempo adjustable, the accented beat highlighted and audible.
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Motif workshop
Transform a short motif: repetition, sequence, inversion, retrograde, augmentation/diminution. Original and result visible and audible.
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Note values & measure
Whole to sixteenth notes (+ dotting) as proportional bars; insert values into a measure and see how they fill it up (4/4, 3/4, 6/8).
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Orchestra 3D
Symphony orchestra on the concert stage with all instrument families, in German and American seating. A timeline following the plan of Ravel's Boléro shows how the crescendo grows from more and more instruments. The same note on different instruments makes the overtone spectrum and the attack visible as the basis of timbre.
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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.
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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.
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Rhythm sequencer
A step grid with kick/snare/hi-hat/clap: place beats, play at tempo, time signature 4/4 · 3/4 · 6/8. Accented beats and a running light show meter & groove.
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Tuning systems
Just intonation (integer ratios, fifth 3:2) vs. equal temperament (2^(1/12)): the deviation in cents visible, the beating of two tones audible.
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Scales & modes
Root + scale (major, minor variants, church modes, pentatonic): construction on the keyboard, whole-tone/semitone step pattern, playable up/down.
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Waveform explorer
An oscilloscope: adjust and hear frequency (pitch), amplitude (loudness) and waveform (sine/triangle/saw/square → timbre).
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