Proch, Heinrich , Austrian conductor and composer; b. Bohmisch-Leipa, July 22, 1809; d. Vienna, Dec. 18, 1878. He studied law and at the same time took violin lessons. He became conductor of the Josephstadt Theater in Vienna in 1837, and from 1840 to 1870, conducted at the Vienna Court Opera. He wrote many songs that were popular for a time; his set of variations for coloratura soprano, with flute obbligato, was particularly well known; he also brought out in Vienna a comic opera, Ring und Maske (Dec. 4, 1844), and 3 one-act operas: Die Blutrache (Dec. 5, 1846), Zweiter und dritter Stock (Oct. 5, 1847), and Der gefahrliche Sprung Qan. 5, 1849).
—Nicolas Slonimsky/Laura Kuhn/Dennis McIntire