As a much sought after accompanist, he toured the United States beginning in 1926 with violinists Efrem Zimbalist and Paul Kochanski, cellist Gregor Piatigorsky, and double bass virtuoso Serge Koussevitsky.

The two eventually married in the United States in 1931 (both had come for separate concert tours) and they decided to settle in New York City in close proximity to sister Lea Luboshutz, now teaching at the Curtis Institute of Music in Philadelphia.

[2] The pair became "highly acclaimed as duo pianists",[2] and at different points in their career received excellent reviews from critics Howard Taubman and Noel Straus.

During their career, they premiered numerous works including a two-piano concerto by Bohuslav Martinu, with Eugene Ormandy and the Philadelphia Orchestra on November 5, 1943.

The duo "began to curtail their performing career in the early 1960s",[6] accepting teaching positions at the New England Conservatory of Music and in the piano department of Michigan State University,[6] which they headed from 1962 to 1968.