Please can anyone identify the artist/recorded version of "Green Leaves Of Summer" being played in fragments
throughout tonight's BBC4 documentary

"Shooting the War - episode 2"

You can hear the intro just after 31 mins into the program.

http://www.bbc.co.uk/programmes/b00qcn2f

I've checked every recording I can find online so far, and it's none of them.

Thanks.