Scarlatti's 555 keyboard sonatas are single movements, mostly in binary form, and are almost all intended for the harpsichord. Some of them display harmonic audacity in their use of discords, and also unconventional modulations to remote keys. Only a small fraction of Scarlatti's compositions were published during his lifetime; Scarlatti himself seems to have overseen the publication in 1738 of the most famous collection, his 30 Essercizi ('Exercises'). These were rapturously received throughout Europe, and were championed by the foremost English writer on music of the eighteenth century, Dr. Charles Burney. The many sonatas which were unpublished during Scarlatti's lifetime have appeared in print irregularly in the two and a half centuries since. Scarlatti has, however, attracted notable admirers, including Frédéric Chopin, Johannes Brahms, Béla Bartók, Dmitri Shostakovich, Heinrich Schenker, Vladimir Horowitz and Marc-André Hamelin. The Russian school of pianism has particularly championed the sonatas. Frédéric Chopin, as a piano teacher, notably wrote: 'Those of my dear colleagues who teach the piano are unhappy that I make my own pupils work on Scarlatti. But I am surprised that they are so blinkered. His music contains finger-exercises aplenty and more than a touch of the most elevated spirituality... I maintain that the day will come when Scarlatti's music will often be played at concerts and that audiences will appreciate and enjoy it'. [Courtesy of Wikipedia]. There has never been a complete recording of all Scarlatti sonatas played on the piano, although Naxos currently has such a project underway, in which each CD is allocated to a different performer. The Music & Arts project will be the only complete edition played on the piano by a single performer.