The Keyboard Poster is a beautiful work of educational art which makes visualizing and applying the principles of harmony as easy as DO RE MI. The easy-to-use music theory on the poster applies to piano, organ, synthesizers, and all other keyboard instruments. It contains a wealth of information for all keyboard players, no matter what styles they play or their levels of musical accomplishment. Features; four octave life-size keyboard, bass and treble key signatures, table of keys, chord and scale table, twelve major scales, bass and treble circles of fifths, and more. 24" x 36". Laminated.