Mats Levén (born 11 September 1964) is a Swedish singer. Some of his most notable collaborations have been with guitarist Yngwie Malmsteen, symphonic metallers Therion and doom metallers Candlemass. In 2011, due to family issues on the part of Firewind's lead singer Apollo, Levén was called in to substitute for the rest of their European tour. He also started touring with Trans-Siberian Orchestra ... show more