The document discusses a method called the "Do-Ti Test" for analyzing harmonic progressions in music. It is intended to supplement existing methods rather than replace them. The Do-Ti Test assumes use of movable-Do solfège and trains students to actively listen for whether chords are based on Do or Ti scale degrees. Examples are provided of how the Do-Ti Test can help students notate and understand harmonic sequences and modulations in works by composers like Beethoven, Mozart, Chopin, and Haydn. Benefits of the Do-Ti Test include triangulating information from other methods, providing a clear model for thinking and hearing harmony, and promoting active listening.