Essercizi per gravicembalo (Exercises for Harpsichord) is a collection of thirty sonatas by Domenico Scarlatti. It was published in London on 3 February 1739 and dedicated by the composer to King John V of Portugal. The latter summoned the composer to Lisbon to teach his daughter, Barbara of Portugal, to play the harpsichord. The collection bears the Kirkpatrick numbers K.1 to K.30: Twenty-three of these sonatas were adapted in the 1740s into concerto grosso by Charles Avison in his collection, 12 Concerti grossi.