NORWICH – The Chenango County Blues Association presents the third in its free summer concert series Thursday night with Nathan and the Zydeco Cha Chas.

The free concerts, held in West Side Park from 7 to 9 p.m., are co-sponsored by NBT Bank and Preferred Mutual. In case of rain, the show will be held inside the Council of the Arts Theater, 27 W. Main St.

Nathan Williams plays zydeco, the fast and furious accordion-driven dance music of the Creole people of South Louisiana, a relatively modern style that emerged after the Second World War. With its trademark rubboard percussion, electric guitars and R&B influences, zydeco is distinct from the fiddle-driven music of neighboring Cajuns.

In the hands of a dedicated musician and songwriter such as Nathan Williams, zydeco is one of the most expressive sounds in roots music. Nathan’s down-home parables are delivered with surprising musical turns and a distinctive Caribbean lilt that reaches back to the very beginnings of Creole culture in Louisiana.