During my first year at Princeton, I took private composition lessons
with Milton Babbitt (it was his final year teaching). This piece
was the result; it used a non-linear transform of a basic
pitch series. I think the first movement was intended to "demonstrate
the mapping" (yeah...) of the transform, and the second movement did some slow
rotations of the transformed set. The first movement was pretty
awful, but the second was ok probably because it was slow.
(music here if I can find it)