He is best known for winning the Swedish Idol 2009. In the final, he performed the song "Higher", which was specially written for the two finalists. "Higher" also became Erik Grönwall's first single. He was between the years 2010 and 2020 the frontman of the rock band H.E.A.T. From March 2022 until March 2024, he was the singer and frontman of Skid Row. He left Skid Row of health reasons.