George Roger Waters (born 6 September 1943) is an English musician, singer, songwriter and composer. In 1965, he co-founded the progressive rock band Pink Floyd with drummer Nick Mason, keyboardist Richard Wright and guitarist, singer and songwriter Syd Barrett. Waters initially served as the group's bassist and co-lead vocalist, but following the departure of Barrett in 1968, he also became their lyricist and conceptual leader.
Pink Floyd subsequently achieved international success with the concept albums The Dark Side of the Moon, Wish You Were Here, Animals, The Wall and The Final Cut. By the early 1980s, they had become one of the most critically acclaimed and best-selling acts in the history of popular music; as of 2013, they have sold more than 250 million albums worldwide, including 74.5 million units sold in the United States. Amid creative differences within the group, Waters left in 1985 and began a legal dispute with the remaining members over their intended use of the band's name and material. They settled out of court in 1987, and nearly eighteen years had passed before he performed with them again.