Randegger, Alberto. (1832–1911) Autograph Letter about Singing, with Postcard PhotographAutograph letter from the Italian born composer, conductor and singing teacher, best known for promoting opera and new works of British music in England during the Victorian era and for his widely used textbook on singing technique. November 20, 1900. 3 pp. Text, in full: "Dear Sir, All I have to say concerning 'the vexed question of voice production' I have clearly written in my Singing Primer, published by Messrs. Novello a few years agoThe fact