Love, Love, Love / chamber opera : 2 acts, op.19 / 1973
The Pirates Of The Deep Green sea / children opera : 2 acts, op.43 / 1977
Saint Erik's Crown / church opera : prologue, 7 pictures & epilogue, op.50 / 1979
Herr Apfelstädt wird künstler / chamber opera, op.68 / 1989
Utopia / opera : prologue & 2 acts, op.92 / 1998