Julian Lennon has discussed how he was initially “shocked” by Paul McCartney‘s recent virtual duet with his late father, John Lennon.At the start of his North American tour and again at Glastonbury, McCartney performed a virtual duet with his former Beatles bandmate courtesy of technology created by The Lord Of The Rings and Get Back director Peter Jackson.At the shows, McCartney and Lennon traded verses on the song ‘I’ve Got A Feeling’, with Jackson having isolated Lennon’s vocal for the team-up. “I’ve got a special little thing here,” McCartney said when introducing that track.