#129 Pink Floyd, 'The Wall' (1979)

While The Who popularized the concept of the Rock Opera, Pink Floyd perfected it with ‘The Wall.’ The album was conceptualized by Roger Waters, who based its main character, Pink (a play on the media and fans thinking that Pink Floyd was the name a solo artist in their early days), on himself and former bandmate, Syd Barrett. The double record explores themes of mental health, bullying, drug use and even war.