15 Progressive Duets for Trombones or Euphoniums TC-The early stages of learning any instrument are undoubtedly the most important. A good teacher is of course essential but it is also vital to have stimulating study material which complements your choice of teaching method and is carefully tailored to introduce learning and playing skills in a structured manner. In writing this collection Philip Sparke worked with many instrumental teachers to discover exactly what was required for each instrument to help players develop the full range of skills whilst still having fun. Each book of this collection is specifically tailored for the developing musician and focuses on study solos and duets aimed to improve specific technical andmusical demands of the instrument.