Lucy Leave

"Lucy Leave" is one of the first songs of Pink Floyd. It was written in 1965 by Syd Barrett and was recorded in October 1965 from the original line-up of Pink Floyd - Barrett, Bob Klose, Roger Waters, Richard Wright and Nick Mason. This song was released in 1996 on a two track mini-CD that came bundled with an Italian, now-withdrawn, 96-page book "A Fish Out of Water" (not to be confused with the children's book of the same name).

http://www.bootlegzone.com/songxref.php?sid=27290§ion=24

Other sources have the recording date as May 1965. Povey's book mentions Klose as having left the band "Summer 1965". More reading to be done...