This trippy prism-style Dark Side of the Moon image is from one of Pink Floyds' most popular albums. It was recorded in 1972, but they actually started playing the material live months before they began the recording process. It was improvised and developed during live performances over time.
Pink Floyd is a well-known and loved psychedelic band that helped lead a progressive rock movement through the '60s and '70s. They are known for their hypnotizing melodies and political lyrics. Listening to Pink Floyd will have you feeling like you are floating on a cloud through a transcendental sky. There is a reason they're viewed as one of the greatest bands of that era.