Together with Lehár as composer, Ludwig Herzer as co-author and Richard Tauber as singer he produced the operettas Friederike (Frederica) (1928), Das Land des Lächelns (The Land of Smiles) (1929) and, with Paul Knepler as co-author, Giuditta (1934).
Marco da Gagliano La Giuditta 1626; three-act opera (lost), libretto Andrea Salvadori, used as the basis for the Judith of Martin Opitz (1635).
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Giuditta: Gloria Banditelli, Rossana Bertini, Silvia Picollo, Europa galante dir.