zlatni dečaci wanted to break through to yugoslav radio stations, which were at the time closed for beat music, so they started recording beat covers of classical music pieces. karaklajić took those recordings to the netherlands, where he participated in a chess tournament, managing to broadcast them on radio, so the editors of the label fontana records became interested in the band. the band, under the name golden boys, released the single "swan lake" (a theme from pyotr ilyich tchaikovsky's opera "swan lake") and "humoresque" (a version of a humoresque by antonín dvořák) through the label, becoming the first yugoslav rock band to release a record for the foreign market. a year later, those two recordings, alongside versions of the theme from charles gounod's opera "faust" and the ion ivanovici's waltz "waves of the danube", were released on the ep "humoreska", released by jugoton. with these compositions the band gained nationwide popularity and performed across yugoslavia. their next ep, released during the same year, featured the songs "čudna devojka" ("strange girl", a cover of marty robbins' song "devil woman"), "sadko" (a theme from nikolai rimsky-korsakov's opera "sadko"), "napušteni dom" ("deserted home", a cover of the four pennies song "a place where no one goes"), and "foxtrot oriental". the single was sold in more than 100,000 copies.