218 Information Technologies for Presentation of Bulgarian Folk Songs with Music, Notes and Text in a Digital Library Lozanka Peycheva 1 , Nikolay Kirov 2 , Maria Nisheva-Pavlova 3 1 Institute of Folklore, Bulgarian Academy of Sciences lozanka.peycheva@gmail.com 2 Department Informatics, New Bulgarian University and Institute of Mathematics and Informatics, Bulgarian Academy of Sciences nkirov@nbu.bg 3 Faculty of Mathematics and Informatics, Sofia University marian@fmi.uni-sofia.bg Abstract. The paper presents the main aspects of an ongoing project aimed at the development of technologies for digitization of Bulgarian folk music and building a heterogeneous digital library with Bulgarian folk songs presented with their music, notes and text. The digitization of sound recordings and notations of folk music will facilitate the access to them, will provide their preservation in another quality and will present the opportunity for these recordings and notations to be used by a greater number of users through web- based access. The digital library will provide both digital preservation of the sound recordings and notations of Bulgarian folk songs and a possibility for new interpretations of the archaic Bulgarian folklore heritage. Information technologies for presentation of Bulgarian folk songs is an interdisciplinary project, which imposes a specific research approach, combining the plurality and dialogue of a multitude of viewpoints, positions and perspectives. Keywords: Digitization, Digital Preservation, Digital Library, Bulgarian Folk Songs 1 Introduction In the recent years informatics and information technologies have played an important role in a number of successful projects oriented towards the digital preservation of manuscripts, printed documents, photographs, audio materials etc. that are regarded as significant scientific and cultural heritage. At the same time the number of originally created in digital format documents, publications, books etc., which are important for the development of the public sphere and the industry have increased at high rates. The availability of an enormous quantity of different materials on the web makes them difficult to access and thus it is necessary to organize them in the form of the so called digital libraries. In the past decade a great number of good results have been