When I was a music major, they taught us the theme & variations for beginning strings by Wolfgang A. Mozart which has been used for centuries to teach beginning string students (violin, viola, cello, bass). Unlike the ever popular "Old Joe Clark," instead of bringing out the creativity in kids, the "Twinkle . . ." set of variations can drive one mad! Anyone who has kids studing the Suzuki string method, and many other string methods has listened to their kid(s) scratch out the unending variations for hours, and can only wish that they had no knowledge of "twinkle, twinkle!"