This song is about detachment, and how some of us deal with the world by withdrawing physically, mentally, or emotionally. The inspiration, like much of the album ‘Wish You Were Here’ (especially ‘Shine on You Crazy Diamond’) was Pink Floyd’s founding member Syd Barrett and his issues with mental health. “we’re just two lost souls swimming in a fish bowl, year after year” It’s easily one of the more popular acoustic guitar songs, loved and played by legions of beginners. Especially, as it’s relatively to play (the signature riff is super simple).