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Normally they're called valves. There are some trumpets out there with rotary valves, which are often just called keys.
They are called valves.
This is called a glissando although generally a glissando doesn't involve all the keys.
keys
More then likely they are just called keys
ephhrata
Cross Keys RFC was created in 1885.
The population of Walpole Cross Keys is 469.
Battle of Cross Keys happened on 1862-06-08.
The area of Walpole Cross Keys is 4,030,000.0000000005 square meters.
Keys
Collective nouns are a bunch of keys, a ring of keys, a set of keys.
Keys - as in a board of keys = keyboard
up and down keys ;)
These keys are often referred to as the home row on the keyboard.
The Overseas Highway cross many of the Florida Keys. Among these keys are East Rockland Key, Big Coppitt Key, Saddlebunch Keys, and Sugarloaf Key.
Normally they're called valves. There are some trumpets out there with rotary valves, which are often just called keys.