The article concerns the issue of music in the cult, Polish Reksio series that was produced in the years 1967–1990 by Studio Filmow Rysunkowych in Bielsko-Biala. It is a brief summary of the thesis on which the article was based (Katarzyna Babulewicz, Zenon Kowalowski’s Film Scores for the Selected Parts of the seria ‘Reksio’, Cracow 2013). The main area of interest is the form of music and its diverse features and functions. Because this issue has not been a subject of any scientific publication so far, the author began her studies from the very beginning, from the interview with the composer Zenon Kowalowski and a visit to the Studio Filmow Rysunkowych in Bielsko-Biala. Detailed analysis of the music are based on videos and on scores (wh...