De grens : chamber opera (short version) : for soprano, mezzo-soprano, bass clarinet, accordion, percussion, violin and contrabass : 2017 / Jan-Peter de Graaff ; libretto by Yuri Robbers
Title from title page (viewed October 17, 2022). Written in 2017. Duration: about 18 minutes (short version) or 30 minutes (full opera). Characters: Station manager (soprano), Kaiser Wilhelm II (mezzo-soprano). For soloists with bass clarinet, accordion, percussion, violin, and contrabass.