I have been lucky enough to play the real Wyton House Compton theatre organ from which this sample set was produced. I previously recorded this track on the real instrument. The Hauptwerk recording posted here uses exactly the same registration.
You can listen to the recording made on the real instrument at http://music.nagioff.com
and see if you can tell the difference! There is also a video at https://www.youtube.com/watch?v=sQHOiv4QuYI
showing the organ and registrations used.
The Carpenters included a couple of iconic guitar solos in this song; I have tried to recreate their spirit in this recording.