For a half-century or more, the internationally renowned Württemberg Chamber Orchestra has been a highly visible presence both in concert and on countless recordings. Consisting entirely of strings, the 22-member ensemble is seven players on first violin, five on second, four each on viola and cello, and two on double bass. But the WCO often augments its forces to accommodate certain works like the Johann Christian Hertel Concerto No. 3 for trumpet, strings, and basso continuo. While the repertory is rich in Baroque works by J.S. Bach, Handel, Vivaldi, and others, the WCO play...