Doo-wop is a style of vocal music that emerged in the 1940s and became popular in the 1950s and early 1960s. It is characterized by its smooth harmonies, simple melodies, and rhythmic vocal patterns. Groups typically consist of a lead singer and several background vocalists who provide harmonies and nonsensical syllables, often referred to as "doo-wop" sounds. The genre often features themes of love and romance, with many songs reflecting the experiences of young people. Notable doo-wop groups include the Platters, the Drifters, and the Five Satins. This music played a significant role in the development of rock and roll and continues to influence artists today.