Jason Donovan was the star of the 1990's West End production of 'Joseph', but started in the Aussie soap 'Neighbours' and became a huge pop star in the UK in the 1980's.
That video is an awful flashback to Sunday! Jason sounded like a record playing at the wrong speed. His face and feeling seemed to give the impression he was taking the song incredibly seriously, yet they were performing the Boyzone pop version - it just didn't work!