To all three points I answer ‘yes’
For everyone on the forum
If you don’t know just have a guess
That way it’s just more fun
wink

The tracks are widely known on both sides of the pond.

Here’s some chart stats for the intros round:

There are 15 songs
UK stats - 13 chart hits including 9 in the top 10
US stats - 12 chart hits including 3 #1s

Also one of the US #1s was not a hit at all in the UK – so trust me, this is fair. In fact there is only one song that wasn’t a hit in either country – but every quiz needs a stinker. They range from 1970’s through to current-ish