Overview
The title alludes to the popular 1925 song I Lost My Heart in Heidelberg composed by Fred Raymond with lyrics by Fritz Löhner-Beda and Ernst Neubach. The film taps into the nostalgic reputation of Old Heidelberg.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 62 | May 1, 1940 (75) | |
| 48 | September 16, 1958 (80) | |
 | 19 | February 7, 1991 (84) | |
 | 23 | 122 | |
 | - | - | |
| 24 | November 22, 1980 (78) | |
 | 49 | July 4, 1952 (75) | |
 | 18 | February 20, 1986 (78) | |
| 37 | April 24, 1978 (89) | |
| - | - |