The Melodic Minor Scale uses one group of notes when ascending and another group of notes when descending. This scale appears often in classical music written in a Minor Key. The first three (3) notes of this scale are the same whether ascending or descending. They differ on the 6th and 7th scale degrees depending upon whether it is ascending or descending. When ascending, the scale is similar to the Major Scale with the 3rd tone played with a flat. When descending, the scale is the same as the Minor (Aeolian) Scale.