Symmetry
This is a phasing piece, but more structured than usual for me. There are two melodies, one played by three cellos, the other by three violas. Each group of instruments plays the same melody several times at three different tempos, 120, 100, and 80 beats per minute. They stop playing at the point when they end the repetitions in sync with the other instruments in their group.
All that aside, I think it sound pretty, and there are some nice combinations of pitches here. 2005-09-30