For beginner level quartets, Walton crafts his own variations on the familiar ""Twinkle, Twinkle, Little Star."" The theme is presented in straightforward fashion, followed by four variationsin different rhythms, including a minor key shift in the third statement. As a benefit, the set also includes substitute parts 3 and 4 for B flat clarinets,expanding the possibilities. The Beginner Quartet Series can be performed by more advanced beginners.