Tales and songs of the soul - unknown advert

The image depicts a vintage poster advertising an art festival in the USSR. The poster features colorful graphics and text in Russian. In the center of the poster, there is a semi naked woman touching her hair in an erotic pose. The background is red and blue and there are various other elements on the poster such as a tree and a woman godess of some sort. The overall color scheme consists of shades of brown, beige, and off-white. Additionally, there is a stamp-like design at the top of the poster. In the bottom right corner, there is a stamp with the text "СКАЗКА О ПЕСНЬ В ГЕ ПРОТАСЬЕВОЙ."