Who wrote the song "Wish You Were Here"?

Explanation

Pink Floyd is a British rock band known for their deep, philosophical lyrics and highly experimental musical style. The band was formed in 1965 and had its breakthrough in the late 1960's. The band's original members were university students Roger Waters, Nick Mason and Syd Barrett. Their debut album was "The Piper at the Gates of Dawn" (1967), and their greatest hits include the songs "Wish You Here" and "Another Brick in the Wall".