"Crazy Diamond" is a song by the British rock band Pink Floyd, featured on their 1975 album Wish You Were Here. The track is known for its haunting melody and reflective lyrics, which explore themes of nostalgia, loss, and the complexities of human relationships. It is often interpreted as a tribute to former band member Syd Barrett, who struggled with mental health issues. The song is divided into two parts, with the first half presenting a dreamy, atmospheric sound, while the second half builds to a more intense climax. Crazy Diamond showcases the band's signature style, combining intricate instrumentation with profound lyrical content, making it a standout piece in their discography.