Music theory gives you the language to understand how music works — from the distance between two notes to the chords that define a key. Use these interactive tools to explore the foundations at your own pace.
Explore the distance between any two notes. See how intervals build harmony, understand semitone counts, and hear how each one sounds.
Explore →△TriadsBuild major, minor, diminished, and augmented chords from three notes. See the intervals and formulas that define each triad quality.
Explore →ⅰScale DegreesUnderstand the role of every note in a scale — tonic, dominant, leading tone and more — using Roman numerals and solfege.
Explore →○Circle of FifthsSee how all 12 keys relate through perfect fifths. Understand key signatures, relative majors and minors, and navigate between keys with confidence.
Explore →Keep exploring