The museums with special interest in ethnographic research differ in collecting empirical data concerning folk music in a wider context. Among 74 museums in Slovakia, only 6 have departments in which the music culture is investigated as well. 10 among them have separate music collections. The essential difference between research in museums and special ethnomusicological institutes (e.g. the Ethnomusicological Department of the Institute of Music of SAS ), are based on rather multidimensional aspects, which are necessary in preparing regional monographs and, as preferred today, also monographs concerning single villages. It is of high importance to analyze the repertory and style of interpretation of music ensembles, concerning their regional characteristics. The source of information is often written and printed music material, which enables us to supplement our actual knowledge about the music bands. The museums have the possibility to include activities of regional institutes as well as of individuals, as teachers, clergy-men, amateurs interested in folklore etc. Also cooperation is preferred with authors of the mentioned regional and local monographs, as well as with students, which in high schools and universities are engaged in the problems of folk music.