Try every Sheets-Media tool before opening it.
Hear a tiny demo, inspect chord movement, flip a flashcard, select notes, and jump straight into each page.
Hear sound
Mini Tone.js synth preview. The generator page uses the larger playback chain.
Visualize progression
Flashcard
What notes are in C major?
Detector mini-preview
Detected: C major triad
Play
Instrument visualizersOpen guitar, piano, violin, bass, trumpet, saxophone, ukulele, or double-bass layouts and inspect notes directly on the instrument.
Generate
30-second music generatorGenerate rhythm and solo ideas with performance metadata, articulations, and audible playback.
Ear Training
Listen and guessPractice recognition by hearing musical ideas and checking your answer against note sets.
Map
Matches networkExplore how chords, scales, modes, and arpeggios connect through shared notes.
Progressions
Chord movement labVisualize chord progressions, Roman numerals, and harmonic motion before going deeper.
Detector
Find what your notes makeSelect notes and detect possible chords, scales, and arpeggios.
Compose
Write ideasMove from theory discovery into writing, arranging, and shaping musical ideas.
References
Theory libraryLook inside the reference system for theory concepts, diagrams, and learning material.