Home› Librettists› Desfontaines-Lavallée Librettist · Catalogued Works Desfontaines-Lavallée 2 opera libretti catalogued, listed by date of premiere. Complete Catalogue of Libretti by Desfontaines-Lavallée 1780 L'amant anonyme by unknown composer, 1780 n/a 1785 L'amant statue by Nicolas Dalayrac, 1785 Nicolas Dalayrac French