The Avant Garde Project is a bunch of experimental outofprint music digitized from LPs. Free. Available in Flac and 192 kbps MP3. Start off at the Archive.
Else Marie Pade (b. 1924) is a phenomenon in the history of Danish music. As a child she was often ill and bedridden. She would listen to the sounds around her... on the stairs, from the yard and the room next to hers. This is where her audio universe began. During the Second World War, she was arrested by the Gestapo and placed in solitary confinement. Rather than despair, she began composing music on the bare prison walls, where she scratched the notes with the fasteners on her garters. After the war and her discovery of the concrete music of Pierre Schaeffer and the French avant-garde, she realized that the sounds resembled those she had heard in childhood, and that this was the music she really wanted to compose. Read a long interview with Else Marie Pade here and listen to her collected works here. (Last link in Danish. Left column is production year, middle column is title. Click the bit rates on the right to listen to each work.)