Die Meistersinger von Nürnberg
At the song contest Beckmesser tries to sing the song, but he sings it to his own tune which does not fit the words, and he gets the words all muddled up.  Everyone laughs and he leaves the stage angrily, saying that Sachs wrote the song.  Walther now sings his prize song.  This time people realize how beautiful it is although it does not obey the usual rules.  Walther can marry Eva.