http://en.wikipedia.org/wiki/Hanns_Eisler
http://go20ccm.tripod.com/hechronik.htm
_ Hanns Eisler - Auferstanden aus Ruinen - Dietrich Knothe
http://www.youtube.com/watch?v=fZ6Y4B4QZfo
_ Hanns Eisler - Supply and Demand - Robyn Archer
http://www.youtube.com/watch?v=4DgJZADHsyg
