Martin Mejzr, as part of the New Phonograph project, focuses on the handling of sound carriers, assessment of their condition and ways of protecting them and ensuring their long-term preservation. His professional orientation is a historian of contemporary, social and cultural history, focusing primarily on the history of popular culture in the Czech lands and the Central European region of the 19th and 20th centuries. Part of his interest is also the history of blues music with various thematic overlaps from its beginnings to the present. From 2014, he has been involved in the administration and administration of metadata of the eSbirky.cz web portal within the National Museum. In 2016 he attended the conference “Popular Music in Eastern Europe” in Debrecen, Hungary.