Hauke Harder, born in 1963 in Schleswig Holstein is a German composer and physicist. He has a PhD in physics and worked as a scientist until 2000. His artistic activity started in 1989, first composing and later creating sound art. He is particularly interested in the possibilities offered by pure tuning. Harder became assistant to Alvin Lucier in 1995 - realising Lucier’s sound installation Music on a long thin wire.