The creation of Pink Floyd
Roger Waters, Nick Mason, Syd Barrett and Rick Wright founded Sigma 6 in 1965; the band later became Pink Floyd. In 1968, David Gilmour replaced Barrett, who had drug and mental health issues. From then on, Waters and Gilmour became the band's creative minds, with Waters focusing on lyrics and Gilmour on the music. They made Pink Floyd one of the most important psychedelic rock bands of the 1970s.