I am into Schytte, Hartmann & Langgaard at the moment. I will eventually move a little further north.
The Scandinavian composers have much to offer those that like their music with rich veins of lyricism.
Is not the opening music to "the sky at night" by Sibelius?
Thal
Yes - and this is not even Sibelius at his very wonderful best! Get to the last four symphonies,
The Oceanides,
Tapiola - and yes, the piano music and songs are considerably more important than I had long thought them to be, although they remain on a lesser level than his very finest achievements.
Then move sideways to Sweden and try your hand with Alfvén and Rosenberg - something that perhaps you might be wise to do before you embark upon the mostly harrowing music of Allan Pettersson and Claude Loyola Allgén...
To return to Sibelius, I can tell you that I had a few lessons years ago from someone who had studied with both Milhaud and Messiaen, of whom the latter had apparently once remarked to a group of students (at the end of one of those outdoor composition classes that he was on occasion wont to hold) that they should get to know (if they had not already done so) the final four symphonies of Sibelius...
Best,
Alistair