I was ask to give the answers to some of the questions.
I’m going to start from No.1 Some of the answers are given in comments.

Billy Joel~It’s Still Rock ‘n Roll To Me
Elton John UK~
David Essex~
in response to Dan~ Sledgehammer
Gold Record
Norway~ Take on Me
3 Dog Night~ Randy Newman
Pink Floyd~ most consecutive weeks in Top 200 Albums chart
James Bond~ “A View To A Kill” by Duran Duran
Footloose~
Top 40~ Elton John
1948~ Columbia
Hollies~ Elton John
No. 1~ Peter Asher