Lewyn toured giving concerts in Germany in 1909,[9] made her London debut at Bechstein Hall in the spring of 1910,[10] and toured with the New York Symphony Orchestra under Walter Damrosch from 1910 to 1912.[3][7] In 1910 the Houston Music Festival Association presented her with a gold medal, to "cordially congratulate you upon making such a triumphant American debut in your home city."[11]
Lewyn was based in Los Angeles by the end of 1922.[12] She served on the advisory board for the Hollywood Bowl summer concerts,[13] and participated in a benefit event for the Los Angeles Music School Settlement in 1925.[14] She also performed at the Hollywood Bowl on several occasions.[15][16] She and violinist Vera Barstow gave a series of joint performances in southern California and on radio programs in the 1920s.[17][18] She also performed with violinist Ben Whitman.[19]
In the 1930s and 1940s, she continued to give concerts,[20] including radio concerts,[21] and taught at her own piano studio on Sunset Boulevard in Los Angeles.[5][16] One of her students was actor Bobby Breen.[22] "Her program, although on the conventional side, was meaty, judiciously built and executed with musicianly aplomb," commented one reviewer in 1945.[20]
Lewyn was known to compose music. She set a poem by fellow Texan Judd Mortimer Lewis to music in 1910.[23] She owned an antique German piano.[24]
Lewyn married Walter Kurt Max Hassenstein in Berlin in 1928; they later divorced. She died in 1980, at the age of 90, while on vacation in Grants Pass, Oregon.[25]
^"Music Lovers Show Great Enthusiasm". Los Angeles Daily News. March 24, 1925. p. 15. Retrieved October 20, 2022 – via California Digital Newspaper Collection.
^"Concert Recital on KNX Wednesday Eve". San Pedro Daily News. September 21, 1926. p. 10. Retrieved October 20, 2022 – via California Digital Newspaper Collection.
^"To Give Sonata Recitals". Daily News. March 14, 1925. p. 17. Retrieved October 21, 2022 – via Newspapers.com.