A trio of pieces by notable nineteenth-century operatic stars, includes MATHILDE MARCHESI (1821-1913) German mezzo-soprano and acclaimed teacher who counted among her pupils notable stars such as Emma Calve, Suzanne Andrews, Frances Alda and numerous others. Fine content A.L.S. 1p. 4to., Paris, Dec. 18, 1900, to an unnamed editor, in part: "...You would extremely oblige me in not publishing my name in the article of 'The Stage.' The results of my method during 48 years are the best comments on it. The controversy about 'voice production' is the very sad proof that all the professors of singing are in the darkness, especially about the female voices. Who produces great singers now-a-days?...". Expertly inlaid, fine. With CAROLINE UNGER (1803-1877), Hungarian contralto who enjoyed great success in Paris before her early retirement, partial A.L.S. 1p. sm. 8vo., [n.p., n.d.], the concluding page to a note, not translated. A bit toned and blurred, else good; and HENRIETTE ROSSI (1806-1854), German singer who enjoyed much success in Paris, bold signature adding date 23 December 1849, executed on a small pink sheet, very good. Three pieces.