"Bucking the popularity of fast-moving, up-to-date musical comedy and the plotless revue, The Student Prince in Heidelberg (the complete title was used throughout the New York run) set the record as the longest running musical of the decade. That fact is all the more impressive since the theatre in which it played, on 59th Street and 7th Avenue, was some distance from the theatre district (the playhouse, later renamed the New Century, was demolished in 1962).

"Based on Old Heidelberg, a popular turn-of-the-century play which had been adapted from the German Alt Heidelberg, the sentimental operetta is set in 1860 in the German university town where Prince Karl Franz (Howard Marsh) has gone with his tutor, Dr. Engel (Greek Evans), to complete his education. There he meets Kathie (Ilse Marvenga), a waitress at the Inn of the Three Golden Apples, and it isn't long before they are professing their love through the melting strains of, "Deep in my heart, dear, I have a dream of you..." The prince, however, is soon called away to assume the throne. Two years later, King Karl Franz returns to Heidelberg in a vain effort to recapture the golden days of his youth."