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What Does The Fourth Valve On A French Horn Do? [Solved]

The 4th or thumb valve allows the player to switch back and forth between the ‘F’ and ‘Bb’ side of the horn and it is the player and not the music or the composer who chooses which side to play on.18 Jun 2019

Ifor James- How the valves work - French Horn Beginners

Prof. Dr. Ifor James Explains for beginners about how the

WTF Does the 4th Valve on the Euphonium Do?

de-mystifying the

[Explained] Fourth Valve

The