 Handel and Corelli were well acquainted with Ferdinando's sister Anna Maria Luisa de' Medici; Corelli dedicated to her the "12 concerti grossi".Handel would visit her also in Düsseldorf during continental trips.Ferdinando's most permanent legacy was the result of his decision in 1688 to hire Bartolomeo Cristofori, a harpsichord builder from Padua, as his keeper of musical instruments.