Short answers, pulled from the story.
Pink Floyd formed in 1965 when four architecture students gathered at the London Polytechnic to play music under the name Sigma 6. The group evolved through names like the Meggadeaths and the Tea Set before rebranding as Pink Floyd Sound by late 1965.
David Gilmour joined Pink Floyd as a fifth member on the 6th of April 1968 following Syd Barrett's departure announced by Blackhill Enterprises. Gilmour initially joined to cover for Barrett's eccentricities before Barrett officially left the band later that month.
The Dark Side of the Moon sold over 45 million copies worldwide making it the world's third best-selling album. It reached number one in the US and stayed on the Billboard Top LPs & Tape chart for more than fourteen years during the 1970s and 1980s.
Richard Wright was fired from Pink Floyd during The Wall recording sessions because the band grew dissatisfied with his lack of contribution. David Gilmour stated that Wright had not contributed anything of value whatsoever to the album.
Roger Waters rejoined David Gilmour, Nick Mason, and Richard Wright for a performance at Live 8 in Hyde Park London on the 2nd of July 2005. This marked their first appearance together in more than twenty-four years following a two-year silence between them.
Sony Music agreed to buy Pink Floyd's recording catalogue in October 2024 for approximately $400 million. The sale included rights to recordings merchandise and spin-offs excluding songwriting ownership.