(piano). The Music Theory Series Is Designed From The Ground-up To Explain The Terminology And Musical Structures Needed For Modern Applications. Level One Is An Introductory Course Which Covers Music Notation, Key Signatures, Basic Scales, Intervals, Modes, Diatonic Relationships And 3-and 4-part Chords. Includes Reference Appendices, A Complete Glossary Of Terms, And Hundreds Of Written Theory Exercises With Answers.