Essential Piano Chords explains the basic theory of chord construction and how it applies to piano. Once you grasp the use of intervals and chord tones in a scale structure, the whole concept of chords is much easier to understand. Chords are the basis of harmony and when two or more notes are played together, a chord is produced. The piano keyboard offers the clearest access to chord study because of its systematic repeated layout. Esssential Piano Chords makes great use of this repetitive layout and explains in detail how to construct over 400 chords. Esssential Piano Chords distributed by Santorella Publications is a fabulous resourse for every student at any level.