This thesis aims to investigate the information habits of people with a serious interest in music. What information needs do they experience, what information sources do they seek out to fulfill these needs and what part does the public libraries play in their information habits? To answer these questions a qualitative approach was used. Four respondents with a serious interest in music were interviewed. The theoretic framework was based on Robert A. Stebbins theory on serious leisure and Karen E. Pettigrew’s concept of information grounds. The results of the study showed that the primary information needs consisted of: finding new music to listen to, finding information about artists and bands, finding information about opportunities to play live and finding information about music technology. The main information sources used were: friends and acquaintances and the internet. Additional sources like books and magazines were also used to some extent. The findings show that public libraries were used very moderately. When they on occasion were used it was mainly to locate materials that could be hard to find through other sources, for example sheet music.