Complex sentence: In his lifetime these works were favorably compared with those of Corelli and Vivaldi, and his nine collections published in Italy, Amsterdam and London were either dedicated to or sponsored by an impressive list of southern European nobility.
Split into simpler sentences: In his lifetime these works were compared favourably with those of Corelli and Vivaldi. His nine collections published in Italy, Amsterdam and London were either dedicated to or sponsored by an impressive list of southern European nobility.