The melodic minor scale is the same as the natural minor with the exception that the sixth and seventh tones are raised by a semitone (half step) when the scale is ascending. When the scale is descending, the melodic minor is the same as the natural minor, e.g.:

C, D, E-flat, F, G, A, B, C (ascending)

C, B-flat, A-flat, G, F, E-flat, D, C (descending)

SCALE STEPS (IN SEMITONES OR HALF STEPS)
1	2	3	4	5	6	7	8	9	10	11	12	13
c		d	eb		f		g		a		b	c'
Play Melodic Minor Scale Ascending
c		d	eb		f		g	ab		bb		c'
Play Melodic Minor Scale Descending