Trumpeters of Shid, left side of the diptych

Painted on the impressions received during a concert-contest of brass bands in the Serbian city of Shid.
The girls in the foreground dance the Kolo dance, the Serbian version of the round dance.
The right side of the diptych is here https://artnow.ru/en/gallery/3/23714/picture/0/1033195.html
The whole diptych is here https://artnow.ru/en/gallery/3/23714/picture/0/1033332.html