Pop Mašina was a Yugoslav progressive rock band formed in Belgrade in 1972. The group blended hard rock sound with blues, psychedelic and acid rock elements and is considered one of the most prominent
The 1972–1976 Pop Mašina lineup, from left to right: Robert Nemeček, Zoran Božinović, and Mihajlo Popović
Opus was a Yugoslav progressive rock band formed in Belgrade in 1973. Opus was a prominent act of the 1970s Yugoslav rock scene.
The last Opus lineup, in 1979, from left to right: Zoran Dašić, Dragan Baletić, Vidoja Božinović, Miodrag Okrugić, Slobodan Orlić, Vladan Dokić