The sound files triads.snd/wav, scales.snd/wav, and Haydn.snd/wav are in C and demonstrate the following tunings: equal-tempered just pythagorean in that order. The sound file Glide_to_oct.snd/wav demonstrates 9 sine waves in unison, independence, and octave fusion. The nine sine waves start out all tuned to A4 (440 Hz). After a few seconds they split. The first four move up in pitch, the next stays the same, and the last four move down in pitch. After gliding independently for a few seconds, they arrive at perfect octaves (A0, A1, A2, A3, A4, A5, A6, A7, A8) and fuse together as a whole again. J. Beauchamp, 10/27/04