The singers Jan Kiepura and Marta Eggerth were a musical dream couple and superstars in the early days of recorded sound and music film. Their younger son, Marjan Kiepura, and his wife Jane Knox-Kiepura tell us about their careers before and after American exile, from serenading fans outside the Vienna State Opera to performing Franz Lehár’s “The Merry Widow” in Polish for audiences in Chicago.