In what century was the the style of voices popular that the Liebeslieder Walzer, Op. 52 was in?
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.
Ballade (classical music) A ballade (from French "", ] , and German "Ballade", ] , both being words for "ballad"), in classical music since the late 18th century, refers to a setting of a literary ballad, a narrative poem, in the musical tradition of the "Lied ", or to a one-movement instrumental piece with lyrical and dramatic narrative qualities reminiscent of such a song setting, especially a piano ballad.