Olof Wilhelm Peterson-Berger ( 27 February 1867, Ullånger — 3 December 1942, Östersund) was a Swedish composer and music critic. As a composer, his main musical influences were Grieg, August Söderman and Wagner as well as Swedish folk idiom. The composer. Peterson-Berger studied at the Stockholm Conservatory from 1886 to 1889 and then in Dresden for a year. He is best known for three albums of national romantic piano pieces entitled Frösöblomster I, II and III (Flowers of Frösö), which includes the often performed Vid Frösö kyrka (At Frösö Church) and Sommarsång (Summer Song).
https://en.wikipedia.org/wiki/Wilhelm_Peterson-Berger