Published in early 1806, Kreutzer's 40 Études ou Caprices for violin - there are 42 today - are the product of his years-long employment at the Conservatoire de Paris and are the most comprehensive collection of studies from hisquill. Their systematic and complete reappraisal of essential violin technique make them an indispensable tool of the trade for every serious student of the violin (conservatory level). In the intervening two centuries, numerousreprints by various publishers followed the