Another
 composer with this last name established the allegro-adagio-allegro form of the Italian overture and was a
 key figure in the development of Neapolitan opera.
Ralph Kirkpatrick catalogued the complete works of one composer with this last name. Another
 composer with this last name established the allegro-adagio-allegro form of the Italian overture and was a
 key figure in the development of Neapolitan opera. A composer with this last name traveled to Portugal,
 where he became the music teacher of the future Spanish queen Maria Barbara, who inspired the creation
 of hundreds of single-movement binary works. That composer with this last name became famous after his
 death for his 555 keyboard sonatas. For 10 points, give this last name shared by the Baroque Italian
 composers Alessandro and Domenico.
Ralph Kirkpatrick catalogued the complete works of one composer with this last name.
{Scarlatti}