Many thanks - I was too lazy/busy to look it up myself but my husband has just found me a you-tube clip of it playing - it's amazing! http://www.youtube.com/watch?v=0K_f9nAJcHo
I rather like the way the picture is in two halves - the grassy foreground with the leaves leads you nicely to the main subject area where you have used the good old rule of thirds. Interesting decision.