Kopprasch is well known for his etudes, but his duets are something to be seen as well. These Grand Duets are exactly that, big and long! These 3 duets take up an entire 18 pages, which should give you a pretty good idea of how involved they are.
Originally intended for the French Horn, these are equally happy in the hands of a trumpeter (or really any treble clef brass) and their endurance and technical challenges translate beautifully between instruments.
Grab your instrument and give these a go. Free samples to the left and an immediate PDF download above.