This work in three movements is written for piccolo, flute, alto flute in G, oboe, English horn in F, clarinet in Bb, bass clarinet in Bb, contrabass clarinet in Bb, bassoon, soprano saxophone in Bb, alto saxophine in Bb, horn in F, trumpet in Bb, six percussion, violins, violas, and violoncellos. The approximate duration is thirteen minutes. The rhythm of the piece is notated metrically and spatially. Movements I and III employ both types of notation, while movement II is strictly metric. Most of the percussion instruments used in the first movement are capable of sustaining very lengthy notes. Upon the release of these notes they have equally long, if not longer, decay times. As the aural residue of the envelopes dissipates, the strings and winds are used to extend the decay times. At the same time, the varying timbres provide subtle shifts in color, so that the overall effect is one of a very large instrument able to undergo a kin of internal, timbral metamorphosis. In diametrical contrast, the envelopes of movements II and III are compressed to the point of short, individual attacks.