But not by the '80s, though. Had the very great pleasure of meeting her once a real lady.
Back on topic ...
Absolutely agree with Freddie and probably George Michael too.
I would add Alison 'Alf' Moyet, who originally came to attention as one half of Yazoo.
Annie Lennox nothing more need be said. And she's still got an absolutely super voice.
Cher another artist whose career spans more than one decade, but she was part of the 1980s, so ...
Bruce Springsteen a really great rock 'n' roll performer.
Billy Joel again, a performer from more than a single decade, but the 1980s saw his biggest commercial album.
Midge Ure frontman with Ultravox and a wonderfully distinctive voice.