From the composer:
The essence of Diasphere is the opposition of two musical ideas: slow polyphonic chorale-like sections, and fast, fiery allegro sections. The juxtaposition of ideas facilitates both the powerful intensity and sonorous beauty that only a trombone quartet can deliver. The title, Diasphere, is meant to evoke this contrast. The piece is a musical conversation between the four players, demanding from each great stamina, technical facility range, and lyricism.
- John Hennecken
Score and parts included: Trombone 1-3, Bass Trombone.