In an ongoing series, BBC News focuses on aspects of life in countries and cities around the world. What may seem ordinary and familiar to the people who live there, can be surprising to those who do not.
Chalga, or pop folk, is a phenomenon in Bulgaria - combining traditional folk music with Eastern European and Asian influences and driving beats.
But it is a style which is both loved - particularly by wealthy young urbanites - and loathed by traditionalists, who consider it tawdry.
Janet Barrie visited a chalga dance club in Sofia to find out more.