uml;rfel, who had been staying there for three years, introduced him to the musical environment, and enabled Chopin to give two performances in the Kärtnertortheater.
             He enjoyed his tremendous success with the public, and although the critics censured his performance for its small volume of sound, they acclaimed him as a genius of the piano and praised his compositions. Consequently, the Viennese publisher Tobias Haslinger printed the Variations on a theme from Mozart (1830), a piece he performed at the Kärtnertortheater
             ...