Hering's etudes are the fruit of his 20 years teaching experience, and the student will develop musicality in the classical style. These are beginning to intermediate level etudes, each one page long, and each introduces a different concept. Also they progress in difficulty throughout the book. This slim book is a good companion and, for advanced players will provide handy material for warmups and brushing up on technique. For more etudes check out Hering's 40 Progressive Etudes.