It is really impossible to report this adequately without seeing the ""six collapsed cardboard blocks"", that serve as a ""piano"" and provide a key to the numbers and code of the text. The purpose of the book is to enable the aspiring student to learn fundamentals of reading music even before a piano is available; there are of text which deal with hand position, with intervals (thirds, fifths, sevenths, etc. broken intervals, fingering, names of keys, treble and base, and so on. There are (closely tied with the ""dummy"" piano), for practice, with one hand, with explanation of scales, sharps and flats, chords, majors and minors, transporting, rhythm, stress, use of the pedal, melody, etc. From Three Blind Nice to the .