Robert John Lange

Robert John “Mutt” Lange (born 11 November 1948) is a Zambian-born British record producer and songwriter. He rose to fame on the strength of the arena rock blockbuster albums he recorded for Def Leppard, AC/DC, and Foreigner. He was married to Shania Twain from 1993 to 2010, producing her records (including Come on Over, the all time best selling album by a female artist) along the way.