Robert John "
Mutt"
Lange (; born 11 November 1948) is a Zimbabwean-born British record producer and songwriter. He is known for his work in the studio and innovations in
multitrack recording. He has produced albums for, or otherwise worked with, artists such as
AC/DC,
Def Leppard,
The Boomtown Rats,
Foreigner,
Michael Bolton,
The Cars,
Bryan Adams,
Huey Lewis and the News,
Billy Ocean,
The Corrs,
Maroon 5,
Lady Gaga,
Nickelback, and
Muse. He also wrote and produced songs with his then-wife, Canadian singer
Shania Twain. Her 1997 album
Come On Over, which he 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 9th best-selling album in the United States.