The database is aimed at displaying the total holdings of releases made by the companies Edison Bell Penkala, Elektroton and Jugoton from 1927 to the late 1950s, reconstructed from the archival collections, sales catalogues, and periodicals. The database also contains information about which releases are still physically preserved in institutions and private collections or digitally available on the Internet. For each available record, the database includes a photo of the label, and for the available digital copies, the first 30 seconds of the recording. By the end of the project, the database will be supplemented with data on the dissemination and reception of individual releases at the time of their creation and later, up until present day, as well as with data on the relationship between the record industry and printed sheet music, radio programmes, concert programmes and festivals, and copyright protection.