Young players who are just starting to read music can find it very difficult to follow a duet or trio. This book solves the problem with colour coded music, making it easy for clarinet beginners to follow their ensemble part. Students only need to know 4 or 5 notes to start playing the first duets in this book, which covers Beginner and Preliminary levels.   The music spans a wide range of composers, as well as traditional tunes from around the world. There is a selection of festive music, a section of rounds, plus there are warm up exercises, each focusing on one aspect of ensemble technique. The arrangements by Karen North have been prepared in consultation with clarinet specialist Sally Lucas.   The arrangements work well from two players up to a large clarinet ensemble. Many pieces offer maximum flexibility as they can be played as a Duet (use the two upper parts) or as a Trio.