A Boy Band is a type of male vocal group often put together by talent managers or record producers. The members are generally expected to perform highly choreographed dance sequences during their shows and music videos, and to have an attractive appearance. A typical Boy Band features three or more members who sing R&B influenced music, but do not play instruments or write their own music. This style began in the 1980s with groups such as New Kids on the Block and New Edition achieving commercial success in the United States, and it has gone through periods of popularity in various countries ever since.