Opa Cupa is in Romanes, the language of Romany people, a call to dance. It is not quite clear who wrote this song, but it was made famous after a performance by Šaban Bajramović.
 
This purchase includes the sheet music for both vocal and instrumental parts with accompaniment chords.
 
This version is in bass clef for instruments such as cello, bassoon, baritone horn/tuba.