Иван Купала - Gamelan
Иван Купала - Ящер
Иван Купала - Галя
(As far as I understand this is a song in Ukrainian)
"Kupala Night, (Russian: Иван-Купала, Belarusian: Купалле; Ukrainian: Івана Купала; Polish: Noc Kupały), called Ivan-Kupala in Russia is celebrated in Ukraine, Poland, Belarus and Russia during the night from 6 to 7 July (on the Gregorian calendar). (This corresponds to 23-24 June on these countries’ traditional Julian calendar.) Calendar-wise, it is opposite to the winter holiday Koliada. The celebration relates to the summer solstice when nights are the shortest and includes a number of Slavic rituals.
The name of the holiday was originally Kupala; a pagan fertility rite later adapted into the Orthodox Christian calendar by connecting it with St. John's Day which is celebrated on 24 June.
The Ukrainian, Belarusian and Russian name of this holiday combines "Ivan" (John, in this case John the Baptist) and Kupala which is derived from the Slavic word for bathing, which is cognate. The two feasts could be connected by reinterpreting John's baptizing people through full immersion in water. However, the tradition of Kupala predates Christianity. The pagan celebration was adapted and reestablished as one of the native Christian traditions intertwined with local folklore."
The text was taken from Wikipedia.