A waltz, is dance music in triple meter, often written in time, probably deriving from which German word, and is a folk dance in time which was popular in Austria, south Germany, German Switzerland, and Slovenia at the end of the 18th century?
Waltz (music): A waltz (German: "Walzer"; French: "Valse", Italian: "Valzer", Spanish: "Vals", Polish: "Walc"), probably deriving from German "Ländler", is dance music in triple meter, often written in  time. Ländler: The Ländler (] ) is a folk dance in  time which was popular in Austria, south Germany, German Switzerland, and Slovenia at the end of the 18th century.
Ländler