When I was studying at Baylor University, my professor Jeffrey Powers used this book as an intermediate low horn text and therefore I didn't have to play from it, but I always meant to come back to it. Originally written for bass trombone and tuba, it is therefore read as old notation bass clef for the horn. The etudes are all lyrical in nature, covering approximately two octaves from low G - g', and are adapted from works by Concone, Marchesi and Panofka. The metronome markings and playing suggestions included before each etude are helpful, whilst the keys can occasionally be a little challenging.