A7

About this chord

A7 (A dominant seventh, sometimes called A dom7) has a bold, gritty, restless color—bright yet tense, with a bluesy bite that begs to resolve. Essential in blues progressions, rock rhythm parts, country turnarounds, and jazz standard harmony, it drives movement and groove. Its twang can suggest Southern U.S. roots and honky-tonk bars, and with Phrygian or harmonic minor flavors it nods to Spanish/Flamenco and vintage Americana. Beginner-friendly open-position shapes and easy barre forms coexist with spicy jazz voicings and altered extensions. Commonly used for dominant function (V of D), it creates pull, sets up cadences, and powers 12-bar blues, shuffles, and folk endings.