Visiting the seminary and Seminary Musician Mark Mummert, center, are Swedish music specialists Ragnar Hakanson, left, national advisor for music in the Church of Sweden, and Bo Svensson, president of a 4,000-member association of church musicians in Sweden. The duo is visiting LTSP, Luther Seminary in St. Paul, MN; Princeton Theological Seminary and Yale Divinity School. The Swedish musicians are learning more about how church music is taught in the U.S. "We have a concern in Sweden to help people understand better why they sing in church and the relationship between theology and the music they sing," Hakanson said.