<HTML>On a 25 year old KG2, (5'2" Kawai grand, in very good condition, considering it is in a practice room), there was a strange noise on notes d2 - g2. On a medium to hard blow, it sounded like metal buzz. Upon closer inspection, it wasn't a metal buzz, but a high pitched groan. Not only that, but a very small adjustment on each key and a little rubbing in the right place, solved the problem. What was it? Wim </HTML>