This is Chris Stapledon's work. It was available on the "ProjectSMiLE CD-Rom" which was created by Chris with help from Steffan Johansson and Ken Worthing.
It came from the section on that CD-Rom called "Share-A-SMiLE". Here are the liner notes for that section:
This is Chris Stapledon's personal edit of SMiLE and is by no means historically accurate. It contains some pieces he "invented" specifically for this mix. These include lyrics and vocals for Child Is Father Of The Man, some elements of Heroes and Villains (including an enhanced version of the "Eggs and Grits" section) and a version of Surf's Up that includes sections of George Fell Into His French Horn.Here's a link where you can read all about that CD-Rom:
http://earcandy_mag.tripod.com/prosmile.htmGosh, that was a long time ago now!