Irish set dance Church in the form of the Public Dance Halls Act 1935. The rise of rock and roll in the 1950s caused the popularity of set dancing to fade. However, in the 1980s a revival started and many sets that have not been done for forty years or more are being recovered and danced again. To start, four couples are arranged in the form of a square to dance with each couple being in the middle of the sides of the square. Both the eight dancers in the group and the dance itself are called a "set". The dance is a
Square dance about ten and thirty, depending on the region and the individual caller. (Many traditional square dance calls are similar or identical to contra dance calls, which are described at contra dance choreography.) New dance moves are explained by the caller. In Modern Western square dance the participants are expected to have learned and become proficient in a particular "program", a defined set of calls. Dancing Modern Western square dance is constantly challenging and surprising due to the unknown or unexpected choreography of the caller (that is, the way the caller ties together the "calls" and the formations which result)—unlike traditional