Publisher Desc.  For students of piano or guitar, this fun and friendly step-by-step introduction to music theory is written with the adult learner in mind. It is both a great self-teaching book and a great method for use with an instructor. Beginning Theory for Adults covers scales, intervals, chords, and chord inversions; major and minor diatonic harmony; keys and the circle of 5ths; plus how to read music. In addition, detailed diagrams help simplify the learning process. An ear training CD and answer key is included.