Shine On You Crazy Diamond" is the Syd Barrett tribute.

Yes, it’s “Shine On You Crazy Diamond” — specifically the nine-part suite that opens and closes the album.

The song is a musical eulogy for Syd, who had been Pink Floyd’s original frontman before his mental health unraveled and he left the band in 1968. The lyrics (“Remember when you were young, you shone like the sun”) are directly about him, and the long, slow instrumental sections feel like watching someone fade out.

The eerie part: while recording the album, Syd Barrett himself showed up at Abbey Road Studios—unannounced, heavier, with shaved eyebrows. The band didn’t recognize him at first. He hung around for a bit, then left. They never saw him again.

So the song isn’t just a tribute. It’s a ghost story that happened to come true.