La Donna e mobile from Verdi's opera 'Rigoletto' . This is from the Ed Sullivan Show in 1957 and, although it is already on YouTube, this version has slightly better audio quality. I've restored/remastered quite a few of Jussi's wonderful recordings either separately or as part of compilation videos and if you want to listen to them all the link to the playlist is https://www.youtube.com/watch?v=YIbgqRoGc6M&list=PLwIuFmWuGenqLQeOuP9WI1aQX01TxDVj-