For 10 points, identify this valved instrument, whose noted modern players included Miles Davis, Louis Armstrong, and Dizzy Gillespie.
This instrument represents The Unanswered Question in an Ives work for it, flutes, and strings. Haydn wrote a concerto for the inventor of the modern version of this instrument. One piece with this musical instrument in its name was excerpted from the Prince of Denmark's March by Jeremiah (*) Clarke, and its known as this instrument's "voluntary." For 10 points, identify this valved instrument, whose noted modern players included Miles Davis, Louis Armstrong, and Dizzy Gillespie.
This instrument represents The Unanswered Question in an Ives work for it, flutes, and strings.
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