Pink Floyd is a legendary British rock band formed in 1965, known for their progressive and psychedelic music. The band originally consisted of Syd Barrett, Nick Mason, Roger Waters, and Richard Wright. They gained fame with their debut album 'The Piper at the Gates of Dawn' and later achieved monumental success with albums like 'The Dark Side of the Moon' and 'The Wall.' Their music often explores themes of alienation, war, and mental health. 'Wish You Were Here,' released in 1975, is one of their most iconic songs, reflecting on the absence of Barrett. Pink Floyd's innovative sound and elaborate live shows have left a lasting impact on the music industry.