Jakub Jan Ryba (1765-1815) was one of the most important Czech music kantors of the 18th and 19th century. He rose to fame with his well-known composition Česká mše vánoční (Czech Christmas Mass) from 1796. Recently there has been increasing interest in his other work. The overall number of Ryba's compositions is estimated at more than 1400. However, only a small part of his work survived. This release of the "Duetti par il Clavicembalo o Fortepiano con Violino solo" was made on the basis of a single preserved copy. Most likely it is not Ryba's autograph, but a contemporary copy. The duets are fully-fledged sonatas, based on the style of the Classical period.