Yes, this is a very fine work. I have heard some radio-perfomances, and
they have been good. It is a very "french" sympony. Olsson was influenced
by Cesar Franck and the other french organ masters. You will get more
information on http://home3.swipnet.se/~w-38951/otto1.htm
The inormation is on Swedish, but there are some interesting links.
Best regards!/ Lars-Johan Lonn