Schubert D 84, his first completed opera, a Zauberoper/Singspiel in three acts to August von Kotzebue"s text; German Wikipedia (https://de.wikipedia.org/wiki/Des_Teufels_Lustschloss) gives the D number, the three-act shape, Kotzebue as the source of the libretto, the concert premiere at the Vienna Musikvereinssaal on 12 December 1879 and the first staging at the Hans-Otto-Theater Potsdam on 17 March 1978. The score is on IMSLP (https://imslp.org/wiki/Des_Teufels_Lustschloss,_D.84_(Schubert,_Franz)) and it is in print from Baerenreiter as BA5532. Added because a 1995 Opernhaus Zuerich performance under Harnoncourt is being filed and the work had no record here.