The historical exposition "Ladislav Zelenka and the Bohemian (Czech) Quartet" made by Tomáš Hanousek will take place in the Modřany Bell Tower in Prague from 3rd to 6th of August. It will present the life and work of the highly respected cellist and pedagogue Ladislav Zelenka (1881 - 1957) and his activities in the internationaly renowned ensemble, which was essentional for the Czech tradition of chamber music. The opening concert of the exposition performed by the Prague Viola Duo is on August 3 at 6 p. m. The exposition can be individually presented in English.