"It was Christmas. I was at home and my phone rang and a little voice talked to me. I said, 'Who's this?' guarding my privacy. (It was a) private number... I thought it was a little bit dodgy. But he said, 'It's Michael Jackson. Do you want to make some hits?' And I said yeah, sure." Sir Paul McCartney was taken by surprise when the King of Pop phoned him to collaborate on his 1982 album THRILLER.