This composer may have stopped using hand-crossings in later pieces due to obesity and was supposedly inspired by his pet walking across a keyboard to write his "cat fugue."
He's not J. S. Bach, but Carl Czerny [CHAIR-nee] studied counterpoint by copying all of this composer's keyboard pieces and composed a Sonata "in the style of" [him]. This composer's music was popularized by the 1963 album Horowitz Plays [him].  This composer may have stopped using hand-crossings in later pieces due to obesity and was supposedly inspired by his pet walking across a keyboard to write his "cat fugue." He spent 28 years in Spain teaching Infanta Maria Barbara, so sounds imitating castanets are littered in the (*) hundreds of single-movement instructional pieces he wrote for her. Alessandro Longo catalogued and edited this composer's works, but the catalogue created by Ralph Kirkpatrick is more frequently used today. For 10 points, name this Italian Baroque composer who composed over 500 harpsichord sonatas and 30 Essercizi.
He's not J. S. Bach, but Carl Czerny [CHAIR-nee] studied counterpoint by copying all of this composer's keyboard pieces and composed a Sonata "in the style of" [him].
Domenico Scarlatti [prompt on Scarlatti]