Swedish folk tune, ”Gammal fäbodpsalm” 

Uppenbarelsekyrkan organ by Gerhard Grenzing (2022). Organist Martin Blomquist.
The piece is called ”Gammal fäbodpsalm” by composer Oskar Lindberg (1887-1955). The title means "Old chalet hymn". The composer Oskar Lindberg was organist of Engelbrekt church in Stockholm, but he came from Dalarna (Dalecarlia) in the north. The nature there is beautiful with high mountains, deep untouched forests, rivers and waterfalls. The tune is from this part of the country and he often describes the dramatic scenery in this part of Sweden in his music.