But when Prince left the stage to come into the audience, he spotted Jackson in the crowd.
"Prince steps off the stage and plays the bass in Michael's face."
Rather than taking it for a cool, one-on-one experience, Jackson took offence.
The next day, at breakfast, he rounded on will.i.am.
"The first words he says as he opens the door are, 'Why was Prince playing the bass in my face?'
"When I said he was just being nice, Michael said, 'No, he's always been a meanie'."
While it's unclear why MJ labelled Prince a "meanie", it's obvious there was some kind of a rift between the two.