Die ersten Menschen (in three volumes with German and English libretto)
Die ersten Menschen / The First Human Beings (Vocal Score with German libretto)
Mikado or The Town of Titipu (in two volumes with English libretto)
Oresteia (full opera score /2 volumes with German, French and Russian libretto)
Oresteia. Opera in three acts (Vocal Score with Russian, French & German libretto)
Pimpinone oder die ungleiche Heirat (with German and Italian libretto)
Lobetanz
Lobetanz, Musical Play in Three Acts (Vocal Score with German libretto)
Pique Dame, Op. 68 (in two volumes with Russian / German libretto)
Iolanta, lyric opera in one act
The Maid of Orléans (in four volumes with German and Russian libretto)
Der Woywode (full opera score in three volumes with Russian libretto)
Mazepa (in three volumes with German /Russian libretto)
Die Bergknappen, National Singspiel in one act in four scenes (full opera score with German libretto)
La Strada op. 45. Opera in two acts and a prologue after Fellini’s film (Libretto: Eric de Kuyper) 2008 (printed in large format)
I due Foscari (in two volumes with Italian libretto)
I due Foscari, lyric tragedy in three acts (Vocal score with Italian libretto)
Attila, Dramma Lirico in un Prologo e tre Atti (with Italian libretto)
Attila, Dramma Lirico in un Prologo e tre Atti (Vocal score with Italian libretto)
Das Liebesverbot
Die Feen
Rienzi (in three volumes)
Die Hochzeit (The Wedding)
Rienzi (Vocal Score with German libretto)
Die Feen, romantic opera in three acts (Vocal score with German libretto)
Der Bärenhäuter
Der Bärenhäuter (Vocal score with German libretto)
Euryanthe
Silvana
Oberon
Peter Schmoll und seine Nachbarn
Euryanthe (Vocal Score with German libretto)
Abu Hassan (Vocal Score with German libretto)
Oberon (Romantic opera in three acts) / Vocal Score with German libretto
Abu Hassan
Der Protagonist Op. 15 (1925) (complete opera score in one act with German libretto by Georg Kaiser)
Der Zar lässt sich photographieren (full opera score with German libretto)
Kain und Abel Op. 54 (with German libretto)
Kain und Abel Op. 54 (vocal score with German libretto)
Der Corregidor
Der Corregidor (Vocal Score with German libretto)
Eine florentinische Tragödie Op. 16 (with German libretto)
Eine florentinische Tragödie Op. 16 (Vocal Score with German libretto)
