The Wall is a rock opera presented as a double album by the English progressive rock band Pink Floyd, released in late 1979. It was subsequently performed live, with elaborate theatrical effects, and made into a film. The Wall is a concept album - specifically, it deals largely with the theme of isolation from one's peers. The concept was largely inspired by the band's 1977 tour promoting the album Animals, with regards to an incident where Roger Waters' frustration with the audience reached a point where Waters spat in the face of a fan who was attempting to climb on stage; this, in turn, led him to lament that such a wall exists. With its significantly darker theme, The Wall featured a notably harsher and more theatrical sound than their previous releases.