Hooktheory II

Hooktheory II is a music theory and songwriting app that teaches harmony and composition through an interactive visual editor. It combines guided lessons with a hands-on Song Builder so you can create chord progressions and melodies and hear instant playback. Core features include an intuitive visual chord and melody editor, a searchable library of popular-song harmonic patterns and guided theory exercises, and export options for MIDI and notation. Designed for students, teachers, and songwriters, it makes complex theory accessible with clear visual building blocks and smart suggestions to speed up learning and composition.