G.R.E. (Gradute Rhythmic Examination) is a piece that involves a computer-administered "test" in the form of a series of short rhythmic exercises that the percussionist plays. After playing each exercise, the computer "grades" the performer on her ability to play the example correctly and then creates a new piece of music for her to play. As the test progresses, the level of difficulty of new questions is guaged by the performance ability of the percussionist.