"...they have designed a series that seamlessly integrates music theory concepts with training in aural skills. The website is easy to use and includes clear instructions for downloading." American Music Teacher Magazine, August/September Issue 2006-08-01 "Welcome to the future of theory and ear training! These are theory books like you have never heard before. Five stars out of five; the best thing I have seen from Frederick Harris for years!" Arabesque, Spring Issue 2006-03-21 "Sound Advice offers an innovative approach to integrating ear training and theory into music study. It can be used by students of all instruments, including those who study voice. Plus, it offers such a fun and attractive presentation." Musifax, Spring Issue 2006-03-21