Czech Republic band), Karel Svoboda and Erich Wolfgang Korngold (film music), Ralph Benatzky, Rudolf Friml and Oskar Nedbal (operetta), Jan Hammer and Karel Gott (pop), Jaroslav Ježek and Miroslav Vitouš (jazz), Karel Kryl (folk). Czech music can be considered to have been beneficial in both the European and worldwide context, several times co-determined or even determined a newly arriving era in musical art, above all of Classical era, as well as by original attitudes in Baroque, Romantic and modern classical music. The most famous Czech musical works are Smetana's "The Bartered Bride" and "Má vlast", Dvořák's "New World Symphony", "Rusalka" and "Slavonic
The Bartered Bride dance from "The Brandenburgers of Bohemia". When "The Bartered Bride" returned to the Provisional Theatre in January 1869, this dance was removed, and replaced with a polka. A new scene, with a drinking song for the chorus, was added to act 1, and Mařenka's act 2 aria "Oh what grief!" was extended. So far, changes to the original had been of a minor nature, but when the opera reappeared in June 1869 it had been entirely restructured. Although the musical numbers were still linked by dialogue, the first act had been divided in two, to create a three-act opera. Various