 The cupola that was located atop the factory now stands on the grounds of the Baltimore Museum of Industry.In 1932 the American Piano Corp. merged with the Aeolian Company, Aeolian-Weber's piano subsidiary, to form the Aeolian American Corporation which consolidated the control of more than 20 piano brands, as well as action manufacturing and plate casting divisions.In 1936 it ranked as the fourth largest producer in the country, after Kimball, Baldwin and Winter & Co.

Berthold Neuer, who had been vice president and general manager from 1927 died in 1938, and his successor Richard K. Paynter died in 1940

In 1942, the East Rochester factories were contracted to manufacture military aircraft parts, keeping the plants and personnel in operation, but by late 1949 piano production returned to full capacity.