Music Theory

Music theory,
structured and visual.

Reference tables and interactive tools for intervals, chords, scales, and their harmonic relationships.

Toniq.fyi is an attempt to break down music theory for myself. And hopefully for you too.

Open Tonnetz Browse Intervals

Triangular note grid with chord detection, audio playback, and a step sequencer.

Musical intervals from unison to octave — symbol, name, number, and inversion.

Chord types by pitch-class set — name and notations across standard, jazz, and classical systems.

Scale modes by pitch-class set — names and alternate names, from pentatonic through heptatonic.