Haydn Trumpet Concerto E flat major Hob. VIIe:1。售價 HK$160，缺貨。At the end of the 18th century, the Viennese court trumpeter Anton Weidinger (1767–1852) invented the “Klappentrompete” [keyed trumpet], which allowed the trumpet to play the octave in chromatic (half-step) steps. Thus…