I posted this on TH, but I'd like to hear some of the opinions of the people overe here. Mr Hickman's Gimmicks thread [on TH] got me thinking about tone, and in particular about long-tone exercises. I used to religiously do about 30 mins of these before playing every day, and at that point had a good sound, but a very limited range (we're talking an unreliable high-C, or even Bb). More recently I have discarded these exercises, and now normally start of with about 20 minutes of slow scalic passages descending to pedal tones. However, my tone is not always as rich and resonant as I would like it to be, and perhaps not always as good as it was when I was doing the longtones. However, my range is much better now, but I am afraid I may be starting to compromise too much in favour of range. My question is this: what is the verdict on long-tone exercises? Can they have adverse effects? Are they really the best way to work on getting that 'perfect' tone?