About: http://webisa.webdatacommons.org/448461682

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	His recording career was no less exceptional; one of the busiest undertaken by any singer, it also included operetta and other music he did not venture in public.
http://www.w3.org/ns/prov#wasQuotedFrom	classicsonline.com