Even by composer standards, Rued Langgaard was a little bit of a strange bird. Despite a promising start – including a symphony performed by the Berlin Philharmonic – his personal and creative eccentricities worked against him. He would die in Ribe, the oldest town in Denmark, very far from the musical capital of Copenhagen, in 1952. His reputation would not begin to gain traction for another 16 years. In all, Langgaard composed over 400 works. Hear two of them, including the ambitious Music of the Spheres, this Sunday at 10 pm.