Released in 1973, "The Dark Side of the Moon" is one of the top selling albums of all time. Pink Floyd followed the epochal success of "Dark Side" with "Wish You Were Here" (1975), "Animals" (1977) and 1979's "The Wall", a double album considered by many to be rock's finest. "The Wall", based on the life struggles of Roger Waters, is the best selling double disk of all time, and as Pink Floyd's second unequivocally definitive album, it solidified their status among the world's elite rock bands. In 1983 Pink Floyd released their tenth studio album, "The Final Cut". Written and almost entirely sung by Roger, (Gilmour sang on just one track), it is the only Pink Floyd album on which Waters is credited for the writing and composition of every song. In retrospect, "The Final Cut" is more fairly considered Roger's first solo album, essentially using David Gilmour and Nick Mason as studio musicians. One of rock music's most critically acclaimed and commercially successful acts, Pink Floyd has sold over 200 million albums worldwide, including 74.5 million in the United States.