Opera Works
| Op. 81 | The Chronicle of Nine: The Tragedy of Queen Jane (1984) for Soprano, Two Altos, Four Tenors, Two Baritones, Bass, SATB Chorus, Orchestra (Opera in Three Acts) |
| Op. 102 | Bontsche Schweig (1994) for Two Sopranos, Alto, Two Tenors, Baritone, Bass, and Chamber Orchestra (Opera in One Act) |
| Op. 123 | Spinoza (2011) for Soprano, Mezzo-Soprano (or Countertenor), Two Tenors, Three Baritones, Chamber Orchestra (Opera in One Act) |