Since my education in art took place during and immediately after WWII, I knew nothing of this group, other than those names mentioned above. (Germany and its culture was pretty much country non grata at that time.) What I saw at the Lembachhaus introduced me to some work which I immediately fell in love with, especially the work of Gabrielle Munter. She had met Kandinsky in Munich in 1902 as a student in an art school he had founded, and ended up as his mistress. (He was married, but, hey, we're talking about artists here.) They traveled together on painting trips with other like-minded painters.
In 1909, Munter bought a house in Murnau, which became a kind of headquarters for the Blue Rider Group. Kandinsky spent the summers there and he and Munter did decorative painting on the furniture and the woodwork which is still there to see. Murnau is a beautiful town near the Bavarian Alps. The house sits on a rise from which you can see the Schlossmuseum on another rise across town. The museum features her work, as well as that of other members of the group. She did many paintings from her windows and when you tour the house, you can see what she saw and the paintings she made. Her paintings look simple but are not. She uses color wonderfully. I guess her work would be considered expressionist landscapes, similar to the American Marsden Hartley who was her contemporary. Kandinsky went on to abstract expressionism, but she continued her own style.
She and Kandinsky were together until 1914, when WWI broke out and he had to return to Russia. They corresponded for years, but she only saw him once again the next year. However, she had kept safe in the house in Murnau his paintings, as well as that of other Blue Rider members, through both wars, and donated them to the city of Munich on her 80th birthday.
It's wonderful to discover someone you never knew about when you are a geezer. I have decided to try to do some work in her style. One is the view out my kitchen window. The other is of a strange building in Freising, a cathedral town north of Erding. It's part of the cathedral complex on a dome-like hill overlooking the town. I think it's a barn or a stable that may have been there before the cathedral was bult.