Haydn composed his Trumpet Concerto in E Flat in 1796 for his friend Anton Weidinger, who was also the developer of the keyed trumpet that could play chromatically. Unlike the natural trumpet, the keyed trumpet had four to six holes or keys similar to the flute; however, the keyed trumpet was ultimately not successful due to its poor sound quality. (Trumpets used today are called valved trumpets and were first introduced in the 1830s.) In fact, the piece is considered one of Haydn’s most popular concertos and is a favorite of trumpet players and classical music lovers everywhere.