Ah, I see you've dropped me some clues, thanks! Actually to say I've played the piece is literally true, but it was pretty much a sight-reading hack-through with a few friends listening in, hardly what you would call a performance - and I was playing the orchestra part. It was a few years ago, I've not seen the score since and I hardly recognise it even with the heavy hints. But it did seem vaguely familiar when I first looked....
Definitely Erik, though.