Mutt Lange.

About Mutt Lange

Robert John "Mutt" Lange is a South African record producer. He is known for his work in rock music as well as co-writing and producing various songs for Shania Twain, his ex-wife. Her 1997 album Come On Over, which Lange produced, is the best-selling country music album, the best-selling studio album by a female act, the best-selling album of the 1990s, and the ninth best-selling album from the United States. He has either been a producer for or worked for artists including AC/DC, Def Leppard, City Boy, the Michael Stanley Band, the Boomtown Rats, Foreigner, Outlaws, Michael Bolton, Heart, the Cars, Bryan Adams, Huey Lewis and the News, Billy Ocean, Celine Dion, Britney Spears, the Corrs, Maroon 5, Lady Gaga, Now United, Nickelback, and Muse.