Just a quick note to say- Read the article on www.4barsrest.com about the development of percussion in brass bands! It has some great tips on the performance, tuning and upkeep of timpani. I find that so many players do not know how to (or just don't) tune timpani properly. There is one point in the article i do not agree with. Don't use a glock to get your tuning note! The glock has so many overtones it can be difficult to find the 'true' pitch, and apart from anything else, they're hardly ever in tune with the band. A tuning fork (or well pitched cornet or euph note) is much better.