The A harmonic minor scale is a seven-note scale that is derived from the A natural minor scale. It is formed by raising the seventh note of the natural minor scale, which creates a leading tone that enhances the scale's harmonic qualities. The notes in the A harmonic minor scale are A, B, C, D, E, F, and G#. This scale is commonly used in various music genres, including classical, jazz, and metal. The raised seventh note, G#, provides a strong resolution to the tonic note, A, making it particularly effective for creating tension and release in musical compositions.