On 15 June 1920, Melba was heard in a pioneering radio broadcast from Guglielmo Marconi's New Street Works factory in Chelmsford, singing two arias and her famous trill. She was the first artist of international renown to participate in direct radio broadcasts. Radio enthusiasts across the country heard her, and the broadcast was reportedly heard from as far away as New York. People listening on the radio barely heard a few scratches of the trill and two arias she sang. Further radio broadcasts would include her Covent Garden farewell performance, and a 1927 "Empire Broadcast" (broadcast throughout the British Empire, by radio stations AWA and 2FC, Sydney, on Monday 5 September 1927; it was relayed by the BBC London on Sunday 4 September).