The Norwegian composer, Knut Nystedt, has a variety of works in several genres.
We have a website: Knut Nystedt | Norwegian composer (1915-2014) where you can find information and a complete list of his works: Works | Knut Nystedt.
Here you can listen to many of his works, and there are links to the publishers where you can buy scores.
There are also sub-pages for spesific ensembles, so you will find choir here: Choir | Knut Nystedt
We hope this page can be to help for you and that you can find something of interest.
Some choir examples:
Monte Garrett says
There is a fine recording of “Peace I Leave with You” by the A Cappella Choir from the University of North Texas, conducted by Jerry McCoy.