Master Theory is the comprehensive theory workbook series that really works. Life-long music teachers Charles S. Peters and Paul Yoder give you a logical, effective way to teach the essential elements of music to any student.It’s For Everyone. General music students, voice students, instrumental students, piano students ... any young musician can build their theory skills through this six-level course.Master Theory is so versatile, it doesn't even require a keyboard! The interactive workbook format makes it ideal for general music classes, performing group rehearsals, or independent study.There’s No Comparison. There are thirty lessons per book, six books in all. Beginning with staff lines and progressing through rhythms, key signatures, scales, and harmony to elementary counterpoint, it's a comprehensive, no-nonsense approach to theory ... with no distractions! Your students deserve to learn theory in the quickest most efficient way possible.