Chord Function Trainer

Chord functions describe a chord's role within a key. The tonic (I) provides home and resolution. The subdominant (IV) moves away from home. The dominant (V) creates tension to return home. The vi chord often serves as a tonic substitute.

The Chord Function Trainer presents chord identification exercises within keys. You learn to recognize which scale degree each chord represents and understand its harmonic function. Start with major keys before moving to minor.

Chord function lets you understand why progressions work, transpose songs to any key, compose new progressions that make harmonic sense, and communicate with other musicians using standard theory language.