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Inmusic, thefifthfactor of achord is thenote orpitch that is the fifthscale degree, counting theroot ortonal center. When the fifth is thebass note, or lowest note, of the expressed chord, the chord is insecond inversionPlayⓘ.
Conventionally, the fifth is second in importance to the root, with the fifth beingperfect in allprimary triads (I, IV, V and i, iv, v). Injazz chords and theory however, the fifth is often omitted, or assumed, in preference for thechord quality determining third andchord extensions andadditions.
The fifth in a major and minor chord is perfect (G♮ in C). When the fifth of a major chord is raised it is anaugmented chord (G♯ in C)Playⓘ. When the fifth of a minor chord is lowered it is adiminished chord (G♭ in C)Playⓘ.
The open fifth andpower chord consists of only the root, fifth and theiroctave doublings.
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