Theory of closure and function theory, leading chords in major and minor, mediants, parallel and contrasting sounds, chord symbols. Basic knowledge of harmony includes 4-phrase structures, simple and extended cadences, secondary dominants, basso continuo, and resolution of dissonance. This 2-page lexicon of musical terms is part of the new series "Music at a Glance," which summarizes the most important topics in music across 6 pages in a clear format. The robust folding card, packaged in cellophane (suitable for storage in a binder), conveys the desired knowledge quickly and compactly, without the hassle of searching through a dictionary. The topics are of both musicological (instrumentation/music history) and practical and educational nature (general music theory/fun with rhythm). Suitable for all students, learners, and music enthusiasts.