Gustaf Grefberg - is a video game composer. Gustaf Grefberg began his career in 2007 and has worked for companies such as Starbreeze Studios, 505 Games, 2K Games, Atari, Tigon Studios, OVERKILL Software, Starbreeze, Electronic Arts and EAP. Gustaf Grefberg's first game was The Darkness which was released 14 years ago. Best Game Gustaf Grefberg contributed to was Brothers: A Tale of Two Sons. Gustaf Grefberg's latest work is PAYDAY 2 which was released 8 years ago.