Mattman & Robin is a Swedish songwriting and production duo composed of Mattias Per Larsson and Robin Lennart Fredriksson. They are published by Wolf Cousins, a publishing company administered by Warner Chappell Music.

In 2016, they won a Grammy Award for Album of the Year for their co-production on American singer-songwriter Taylor Swift's fifth studio album 1989.In 2016 they won the "Grand Prize" at the Denniz Pop Awards.

Source: Wikipedia (https://en.wikipedia.org/wiki/Mattman_%26_Robin)