Opus (Serbian Cyrillic: Опус) was a Yugoslav progressive rock band formed in Belgrade in 1973. Opus was a prominent act of the 1970s Yugoslav rock scene. Formed and led by former YU Grupa keyboardist Miodrag "Mive" Okrugić, the band went through several lineup changes, its various lineups featuring notable musicians like guitarist Miodrag "Bata" Kostić, vocalist Dušan Prelević and guitarist Vidoja "Džindžer" Božinović. The band released only one studio album, ending their activity in 1979.