WHAT??
This wonderful piece of experimental "new music" from someone who, up until recently, has suggested that this is not the sort of music of which the late inventor of the theremin, Lev Sergeievitch Termen, would have approved....??? LOL
Thierry, I loved the part where you threw golf balls onto the piano strings. I particularly liked the WAY you did it. You crept up to the piano like a guilty kid who is about to do something very naughty and when you finished, you slithered back to the theremin with a much-too-satisfied look on your face.
For me, the theremin was most effective when it was playing in its bass register. That is where I felt it added a dimension that none of the other instruments could provide.
I guess what I liked most about this performance was the obvious sense of fun and enthusiasm of the participants. I often find what kills these kinds of performances for me, is the deadly seriousness (dare I say PRETENTIOUSNESS) with which the musicians take what they are doing.