Question: what opera was Aatos Abel Tapala in that was originally wrote by Hugo von Hofmannsthal? 
Sentence (from "Der Rosenkavalier (1926 film)"): Hofmannsthal considerably changed the storyline for the film version (which included a final scene in the formal gardens behind the Field Marshal's residence) and Strauss' score included music not only from the opera but also sections of his Couperin Suite and a march for the Field Marshal, who appears in this version.
Relevant evidence: No