The package (ISBN 978-0-415-73036-5) contains the second edition of Theory for Today's Musician (ISBN: 978-0-415-66332-8) and the Theory for Today's Musician Workbook (ISBN: 978-0-415-66333-5). The package is available for print books only. Ebook users should purchase the textbook and workbook separately.This workbook accompanies the second edition of Theory for Today's Musician and is full of exercises to help students practice and master the concepts presented in each chapter. Audio files are included.