Presented within this book is Mozart's 1774 piano composition, “Sonata for Piano Four-Hands in D Major, K.381/123a”. Wolfgang Amadeus Mozart (1756 – 1791) was an extraordinarily prolific and seminal composer during the Classical era. He displayed astonishing musical ability from a very early age, composing and playing competently when just five years old. During his lifetime, Mozart composed over 600 original works, many of which are considered to be the apex of symphonic, concertante, chamber, operatic, and choral music. Classic Music Collection constitutes an extensive library of the most well-known and universally-enjoyed works of classical music ever composed, reproduced from authoritative editions for the enjoyment of musicians and music students the world over.