Final answer:
In Haydn's Trumpet Concerto, the soloist performs on a trumpet, which is true. The piece is a testament to the trumpet's capabilities as a solo instrument, especially after the development of the keyed trumpet.
Step-by-step explanation:
True, in Haydn's Trumpet Concerto, the soloist indeed plays a trumpet. This concerto was composed by Joseph Haydn in 1796 for his long-time friend Anton Weidinger, who had developed a keyed trumpet which could play chromatically throughout its entire range. The invention of the keyed trumpet was a significant improvement that allowed for a more versatile range of notes to be played, as compared to the natural trumpets of that time which were limited to the notes of the harmonic series.
Haydn's Trumpet Concerto is a classic example of the concerto genre during the classical period and showcases the capabilities of the trumpet as a solo instrument, benefiting from the advancements in instrument technology. The concerto is structured in three movements and places significant demand on the trumpet soloist, who is tasked with delivering a wide range of notes with clarity and precision.