Theory Fun Factory 2Music Theory Puzzles and Games Theory Fun Factory. At last theory made fun! Packed with puzzles and games, with helpful hints from a motley crew of characters, this book will be enjoyed by everyone! Great preparation for theory exams and helpfulfor your music lessons: ideal for instrumentalists as well as pianists. Activities: 8VA SIGN, THE CANCELLING ACCIDENTALS COMPOSING AN ANSWERING RHYTHM DA CAPO AND DAL SEGNO DEGREES OF THE SCALE GROUPING NOTES