Harmony Drills Discover drills and exercises to improve your knowledge of jazz harmony. There are harmonic drills can be completed at the piano, and also away from the piano. Find out more in the treads below. PDF Practice Plans Download PDF practice plans to supercharge your practice sessions. The information threads below are organised by course and contain links to our practice-focused video series. Practice Logs Post and browse through practice logs & routines submitted by our students and teachers. Sharing the things we are working on helps to motivate ourselves and inspire others.