sentences:  The first of Dvořák's music to be published by Simrock was the "Moravian Duets", which attained widespread success; encouraged, Simrock asked the composer to write something with a dance-like character.Unsure how to begin, Dvořák used Brahms's "Hungarian Dances" as a model—but only as a model; there are a number of important differences between the two works.For example, whereas Brahms made use of actual Hungarian folk melodies, Dvořák only made use of the characteristic rhythms of Slavic folk music