sentences:  With the recommendation of Maud Powell and Efrem Zimbalist, he started at the age of 13 to study with Franz Kneisel in New York City at the Institute of Musical Art, now Juilliard.He played the viola with the Musical Art Quartet from 1926 to 1933.His solo recital debut at New York's Town Hall in 1928 was under the auspices of the Naumburg Award.