Elman was the second prodigy pupil of Leopold Auer (after Efrem Zimbalist) to become internationally famous before adolescence. Their Hungarian-born teacher -- a student of Joachim and subsequent mentor of Toscha Seidel, Jascha Heifetz and Nathan Milstein -- was appointed professor of violin at the St. Petersburg Imperial Conservatory in 1868. He remained until the Revolution, then moved to the U.S. In 1878, Tchaikovsky dedicated his violin concerto to Auer, but withdrew the honor when the latter declared it "unplayable." Later on, Auer recanted, performed the work repeatedly,...