Interactive Circle of Fifths

The Interactive Circle of Fifths is a dynamic, web-based music theory tool designed to demystify the relationships between keys, chords, and scales. It transforms the classic Circle of Fifths diagram from a static reference into an engaging, hands-on learning environment. The core value proposition is immediate auditory and visual feedback: you don't just see the theory, you hear it and interact with it in real-time. It is built for musicians of all levels, from beginners seeking to understand fundamental chord progressions to composers and improvisers looking for new harmonic ideas. By integrating visualizers for both piano and guitar, it bridges the gap between abstract theory and practical instrument knowledge. Users can explore major and minor keys, build and listen to chords, sequence progressions, and study a wide array of scales including pentatonic, blues, and diminished, all within a single, intuitive interface. This tool makes advanced music theory accessible, actionable, and directly applicable to playing and songwriting.