Harald Schoneweg’s most important teachers were Igor Ozim, Nathan Milstein and Sandor Vegh. He studied at the conservatories of Cologne and Düsseldorf. After obtaining his postgraduate diploma in 1980 he started his career with the Cherubini Quartet which lasted until 1994 and took him in more than 2000 concerts around the world. During this period he was exclusive artist of EMI-Electrola and also member of the Linos Ensemble.
In 1987 he founded a chamber music festival at Badia Passignano near Florence in Italy, and as the artistic director of the festival he invited international musicians to the center of Tuscany to play chamber music. Since 1994 he is professor for string chamber music at the State Music University of Cologne. Numerous famous ensembles of the young generation such as Quarteto Casals, Schumann Quartet, Klenke Quartet, Trio Con Brio and Leibniz Trio among others, worked with him.
Beside his teaching activity he plays with the Goldberg String Trio and is partner also in other string quartets or piano trios. He regularly gives master classes or is member of the jury in international competitions.