Son of the preceding, native of Vienna also. He also became violinist in the Opera Orchestra; first as assistant, then as chapelmaster. Most important was the part he took in the performance of Beethoven's works, at which he stood just behind or at the side of the great composer. It is said that Beethoven, carried away with the theme, or later, when he became deaf, was apt to beat too fast, and the orchestra followed Umlauf's leadership. Umlauf composed an opera, an operetta, six ballets, sacred music for the Court Chapel, and published a violin sonata, a piano sonata for four hands, and a few pianopieces.