Hm. Didn't know I was a viola player although I must admit I've never tried!
Descombes, if you look a little further down that thread you'll see many references to a concert I played in London not long ago and Mr Google should do the rest.
(But mum's the word, eh?)
Clues all in place, thanks!
My tongue-in-cheek reference to violas was a result of careless reading of the "Look at what I've bought" thread. I got the clarinet reference, then misread Kagel as Kegelstaat. Having worked out OS's identity, I thought I'd be perverse and suggest he might be the viola part of the Trio.
Seriously, IRR is wonderful. I'm always emailing Maire Taylor to tell her so. All the reviewers (with one notable exception!) are such perceptive writers; my credit card suffers after every issue comes out.