SWEDISH PIANO PLAYER | COMPOSER | PRODUCER | Mattias Roos is a Swedish musician, songwriter and producer with a quite long track record to his name on the Swedish music scene. Mattias is a well hired producer among Swedish artists, and have also been playing with several Scandinavian artist His keyboard work and songwriting skills can be heard in a series of songs spanning over several music genres. Mattias has recorded piano and keyboards for international artist like guitar player U-Nam, the soulful and Funky James Day, J.D’s Time Machine, Mattias has done collaborations with, Saxplayer Andrey Chmut, Elan Trotman, Greger Hillman, Michael Lington guitarplayer Paul Brown and U-Nam.