SEQUENCES for Horn Solo—by Kazimierz Machala is a virtuoso composition that challenges the hornist and the listener to think beyond the theoretical definition of the term sequence (the repetition of a melodic or harmonic idea at a different tonal level). Throughout the four pages of this composition, he does not merely repeat the melodic ideas, but continually transforms them. As a result, Dr. Machala demonstrates the concepts of melodic development at the highest level.