5th June 1975, During recording sessions for Wish You Were Here at Abbey Road Studios, London, England, Syd Barrett turned up out of the blue as Pink Floyd were listening to playbacks of Shine On You Crazy Diamond — a song that happened to be about Barrett. By that time, the 29-year-old Barrett had shaved off all of his hair (including his eyebrows), become overweight, and his ex-bandmates did not at first recognise him. Barrett eventually left without saying goodbye, and none of the band members ever saw him again.
More here: http://www.thisdayinmusic.com/pages/wuwh
More here: http://www.thisdayinmusic.com/pages/wuwh