This is very surprising news. With a four decade career, Michael Jackson was one of the most successful artists of all time. Music industry bible Billboard is reporting that the most successful Michael Jackson song of all time was his second collaboration with Ex-Beatle Paul McCartney, “Say, Say, Say“. While his “Billie Jean” single spent more time in the #1 spot, “Say, Say, Say” spent more weeks in the Top 10 and more time on the chart overall. Very innnneresin’.