This presentation, created at the invitation of the Warsaw Autumn Festival, consists of two parts: a gallery of mechanical sound objects by Paweł Romańczuk, designed with the spaces of the Sokolnicki Fort in mind, and a performative part executed by Paweł Romańczuk and Tomek Szczepaniak on their own versions of the Cristal Baschet instrument, constructed in the Small Instruments studio. This concert part involves the meeting of two sound environments: instruments made of metal and glass as well as Hans van Koolwijk’s Bambuso Sonoro pipe set.