Original sentence: The Aeolian forms the base of the most common western minor scale; however, a true Aeolian mode composition will use only the seven notes of the Aeolian scale, while nearly every minor mode composition of the common practice period will have some accidentals on the sixth and seventh scale degrees in order to facilitate the cadences of western music
Edited sentence: The Aeolian forms the base of the most common western minor scale; however, a true Aeolian mode composition will use only the seven notes of the Aeolian scale, while nearly every minor mode composition will have some accidentals on the sixth and seventh scale degrees in order to make the melodies and harmonies work better