Euphonium: 3T/1S or 4T?

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Posted by Tuba Walrus on May 28, 1999 at 21:45:21:

I have played four valve tubas for two or so years(all four on one hand). What I want to know is (other then the need for space for a compensating system)what does three top action valves plus a side action valve have over four top action valves?

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