Jean-Baptiste Duvernoy

Jean-Baptiste Duvernoy (c. 1802 – c. 1880) was a French pianist and composer of the Romantic period. He is best known for his ''Elementary Studies'', Op. 176, designed to improve finger co-ordination. He is also known for ''The School of Mechanism'', Op. 120.

Duvernoy also wrote many other studies designed to help finger co-ordination. Provided by Wikipedia