Jascha Heifetz
Achron emigrated to the United States in 1922 and became a citizen of that country in 1928. On March 21, 1923 he received a telegram from Jascha Heifetz offering him a position as accompanist for tour beginning May 1, 1923 terminating May 1, 1924 including tour of the orient. On New Year's Eve 1923 he played in Carnegie Hall as an accompaniment for Jascha Heifetz annual solo violin performance.