#9
Barcelona
#10
thirtysomething
Round 4 might be a little tougher. Hide your answers in ‘spoiler’ tags.
The songs that can be added to #1 are:
any songs that were also written by Prince
and the answer to #8 is:
the band Yazoo (Vince Clarke & Alison Moyet) were called “Yaz” in the US because the name Yazoo was already taken by a different band
Close enough on #1, although the best answer is a bit more involved. And bingo on #8.