Agathe von Trapp, the eldest daughter of a well-known musical family, overcomes many obstacles to pursue her musical career and move to the United States.
| Actor | Role |
|---|---|
 Matthew MacfadyenGeorg von Trapp | Georg von Trapp |
 Eliza BennettAgathe von Trapp | Agathe von Trapp |
 Rosemary HarrisOlder Agathe von Trapp | Older Agathe von Trapp |
 Cosima ShawCarrie von Trapp | Carrie von Trapp |
 Yvonne CatterfeldMaria von Trapp | Maria von Trapp |
 Lauryn CannyKirsty | Kirsty |
 Robert SeeligerMarcus von Trapp | Marcus von Trapp |
 Brigitte KrenFrau Mayer | Frau Mayer |
 Johannes NussbaumSigi | Sigi |
 Cornelius ObonyaKonrad | Konrad |
 Wolf Danny HomannNot listed | Not listed |
| MMartin WalchFriend | Friend |
 Bettina MittendorferMother Trapp | Mother Trapp |
 Tom StraussNot listed | Not listed |
 Annette DaschLotte Lehmann | Lotte Lehmann |
| MMarco DottAttorney Muller | Attorney Muller |