I love the sound of trumpets.. But any instrument that requires a 'spit valve' could maybe use a bit more fine tweaking. For hundreds of years the trumpet has been around; at what point did we decide 'nah fuck it, that'll do' and just become okay with a quart of spit sitting inside our instruments? Now I'm no trumpet technician, nor player. I'm just saying that in the span of 70 odd years. We've gone from silent films to high definition tellies in almost every house in and developed country. SURELY we must have evolved past the point, in the last however many hundred years, of having the need to manually release spit from our instruments.