Yodeling!
An evening pause: Hat tip Jim Mallamace, who writes,
If I understood German, I think I would enjoy this performance even more. Angela Wiedl is Bavarian, Melanie Oesch is Swiss, and Herlinde Lindner is Austrian. From what I read in the comments, each singer sings the “Erzherzog Johann Jodler” in her own country’s version of German.