Not often, but enough to learn this trick, we are asked to play a low F. Usually it is required by someone who knows nothing about our instrument or acceptable orchestration practices. Or, in the case recently, where I arranged a number which required the first trumpet to exceed what I considered a reasonable high range and I decided to lower the key to solve the problem. Unfortunately by lowering the key it placed the lowest note in the fourth trumpet part down to a low F. Not being one to change the F to one an octave above, which…