Domenico Scarlatti’s 555 keyboard sonatas were most probably written for his patron Princess Maria Barbara of Portugal. Her love of music leads us to assume that she was suitably appre- ciative of these extraordinary gifts from her teacher and friend. The earlier sonatas are rooted in the Italian style, with the Sonata in G major, K.103 notable for its eyebrow-raising lurches between major and minor tonalities. The influence of Spanish flamenco guitar can be heard in exotic embellishments and spicy harmonies in sonatas such as K.137 and K. 303. Scarlatti’s astonishing originality can be found throughout this entire collection.