Famous as the lead vocalist of the Swedish rock band Street Fighting Man, he recorded a 2011 album titled The Shadow and singles titled "Raise It" and "Learning to Die." His solo recordings include "Dancing in My Head" and "Angels & Stars."
After studying biochemistry at Canada's McGill University, he taught high school mathematics in Sweden.
He and his brother, Nicholas, were raised in Boston, Massachusetts.
He is featured on English rapper Tinie Tempah's U.K. Gold and U.S. Platinum track "Written in the Stars."