chord progression

**Chord progression** is **the sequence of chords that forms the harmonic foundation of music** — AI generates progressions that create emotional movement, tension, and resolution, following music theory principles while exploring creative harmonic possibilities across genres. **What Is Chord Progression?** - **Definition**: Ordered sequence of chords in a piece. - **Function**: Provide harmonic structure, create emotional journey. - **Notation**: Roman numerals (I, IV, V) or chord symbols (C, F, G). **Common Progressions** **Pop**: I-V-vi-IV (C-G-Am-F) — "Don't Stop Believin', "Let It Be." **Blues**: I-I-I-I-IV-IV-I-I-V-IV-I-I (12-bar blues). **Jazz**: ii-V-I (Dm7-G7-Cmaj7) — most common jazz progression. **Rock**: I-IV-V (C-F-G) — classic rock progression. **Minor**: i-VI-III-VII (Am-F-C-G) — emotional, dramatic. **Harmonic Functions**: Tonic (home, stable), Subdominant (away from home), Dominant (tension, wants to resolve). **AI Generation**: Markov chains (learn transition probabilities), neural networks (RNNs, transformers), rule-based (music theory), style transfer (emulate artists). **Applications**: Songwriting, improvisation backing, music education, composition tools. **Tools**: Hookpad, ChordAI, Chordbot, AutoChords, Suggester.