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8
votes
1answer
124 views

Why isn't there a reed aerophone with valves?

Most reed instruments instruments have keys or finger holes. Most brass instruments have valves. There are brass instruments with keys, though, like the (fairly unsuccessful) keyed bugle. I can find ...
5
votes
3answers
396 views

Why do trumpet valves shift down and not up?

I understand how trumpets work - valves open to force the air through crooks, which lengthens the pathway the air must travel, thus decreasing the resonant frequency. The question is, why are ...
4
votes
2answers
111 views

How to disassemble a tuba for cleaning

When I remove the valves of a piston tuba, do I remove the spring also?