Deutsche Harmonia Mundi is a German classical music record label. It was founded by Rudolf Ruby and based in Freiburg, Breisgau. The company was acquired by BMG Music in 1992 and is now part of Sony Music Entertainment. Ruby had Alfred Krings of West German Radio assemble their own house orchestra Collegium Aureum, founded 1964, to perform early music, selecting as leader Franzjosef Maier.
