In music theory, a dominant seventh chord, or major minor seventh chord, is a seventh chord composed of a root, major third, perfect fifth, and minor seventh; thus it is a major triad together with a minor seventh. It is often denoted by the letter name of the chord root and a superscript "7". Dominant seventh chords are typically built on the fifth degree (the dominant) of the major scale. An example is the dominant seventh chord built on G, written as G7, having pitches G–B–D–F: