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An augmented major seventh chord play (help·info) comprises the root note, the note a major third...

An augmented major seventh chord play (help·info) comprises the root note, the note a major third above the root, the note an augmented fifth above the root, and the note a major seventh above the root. It is often indicated in jazz scores as +7; for example a C augmented major seventh chord may be noted as "C+7". For example, a C augmented major seventh chord (as found on the harmonized ♭III degree of both the harmonic and melodic minor scales) contains C, E, G♯, and B.