Occurred on June 5, 2021 / Sydney, New South Wales, Australia
Info from Licensor: "This video was taken by Oscar and Archie’s mumma, Toni, at Glenmore Park in Sydney in 2021. They often start to sing when they hear me sing, so we have a little duet going and they are becoming very in tune with each other, as you can see. The neighbors haven’t complained yet, but I’ve heard the odd window and door closing abruptly when they break out in song."