Interactive Circle of Fifths

The Interactive Circle of Fifths is a comprehensive digital music theory tool designed to visualize and audibly demonstrate the foundational relationships within Western music. It transforms the classic circular diagram from a static reference into a dynamic, hands-on learning and composition aid. At its core, the tool allows users to explore any musical key with a single click, instantly revealing the corresponding scale, chords, and harmonic functions. It is engineered for a wide audience, from music students grappling with theory basics to seasoned composers and songwriters seeking inspiration and verification for chord progressions. Its main value proposition lies in synthesizing complex theoretical concepts—like scale harmonization, chord function, and key relationships—into an intuitive, interactive visual and auditory experience. By integrating instrument-specific visualizers for piano and guitar, it bridges the gap between abstract theory and practical instrument knowledge, making advanced musical understanding accessible and engaging for all.