Chamber Orchestras in North Rhine-Westphalia

Which chamber orchestras are there in North Rhine-Westphalia?

Chamber orchestras are also an important pillar of musical life in North Rhine-Westphalia.
The German Music Information Centre (miz) lists professional chamber orchestras, provided that at least half of their members are professional musicians. They are predominantly financed by the private sector, through their own income and donations, but also receive some support from the public sector. Their repertoire consists of works from the Baroque to the present in equal solo or significantly reduced chamber music instrumentations; The basic form is the pure string orchestra.