Due to technological innovations, music can now be experienced by more people, for more of the time than ever before. Mass availability has given individuals unheard-of control over their own sound-environment. However, it has also confronted them with the simultaneous availability of countless genres of music, in which they have to orient themselves. People start filtering out and organizing their digital libraries like they used to do with their physical music collections. However, there is the difference that the choice lies in their own hands. Without being restricted to the limited collection of music-distributors, nor being guided by the local radio program as a ‘preselector' of the latest hits, the individual actively has to choose and determine his or her musical preferences. The search for the right song is thus associated with considerable effort.