What occurs in the Melodic form of the A Minor scale when ascending?

In the melodic form of the A minor scale, when ascending, the characteristic alteration involves raising the 6th and 7th notes by a semi-tone. This change is implemented to create a leading tone, which is the raised 7th note, and to provide a stronger resolution to the tonic, especially when moving from the 7th note to the tonic (the 1st note) of the scale.

For A minor, the natural scale consists of A, B, C, D, E, F, G. However, in the melodic ascent, this transforms to A, B, C, D, E, F♯, G♯ as both the 6th (F) and the 7th (G) notes are raised. This alteration enhances the melodic contour, making the ascent more fluid and harmonious, thus aiding in creating a distinct sense of movement toward the tonic.

This approach contrasts with the natural minor scale and provides a unique and recognizable sound that composers use for emotional and dynamic effects in their music.