In the late classical period composers began to want to determine every note in the cadenzas of solo concertos, rather than leaving this as a matter for the soloist&rsquo,s virtuoso inspiration. Penderecki&rsquo,s cadenzas for Haydn&rsquo,s celebrated trumpet concerto are written in this tradition, but the creative will of the modern composer makes them far wider in scope. Penderecki&rsquo,s stylistic methods leave the soloist every opportunity to display their virtuoso skills. The original notes of Haydn&rsquo,s concerto movements remain present as an underlying framework. Having the horn parts worked into the cadenzas produces a highly structured form that shows the trumpet concerto of the Classical period reflected in the light of modern composition techniques.