Following in the footsteps of the popular Hal Leonard Pocket Music Dictionary, this handy pocket-sized book is the most contemporary music theory book on the market! A step-by-step guide to harmony and theory for every musician, it includes thorough, yet to easy-to-understand analysis of: intervals, rhythms, scales, chords, key signatures, transposition, chord inversion, key centers, harmonizing the major and minor scales, extended chords, modulation and much more. Packed with info from the Harmony and Theory course at Musicians Institute!