Cada pieza incorpora nuevos fundamentos de la t�cnica del piano: Escalas mayores y acordes * Ejercicios r�tmicos * Transposici�n * Diccionario Musical y Teor�a. [Spanish] [The Michael Aaron Piano Course Lesson books have been completely re-engraved, expanded (adding more definitions of musical terms and more musical pieces), updated (with modernized artwork), and re-edited (with less emphasis on fingerings and more on note-reading)].