Generate a sentence about this data: List of operettas by Ziehrer; Das Orakel zu Delfi PLACE,_THEATRE Linz, Landestheater; Das Orakel zu Delfi PREMIERE_DATE 21 September 1872; TITLE Das Orakel zu Delfi
Das Orakel zu Delfi is a operetta by Ziehrer that premiered on 21 September 1972 at the Landestheater in Linz.