They are Amsterdam's Caspian Hat Dance. Caspian Hat Dance play original and traditional gypsy music, klezmer music, misbehaved drunken village wedding music, southern italian pizzica, and pretty songs sung in Roma on Bolivian mountaintops. Caspian Hat Dance have played nearly everywhere conceivable
in Amsterdam and have toured Holland, Germany and eastern europe. They play in bars, squares, cafes, squats, and concert stages, in your living room and on your rooftop.