Since then, this form of music has spread and is on the curriculum at different public institutions as a very small branch of classical music. As opposed to Schaeffer, who preferred to work with taped recordings of real sounds such as those of trains or birds, Stockhausen focused on using only electronically created sounds. In Sweden, this music form was basically unknown until it was introduced in Harry Martinsson 's science-fiction opera Aniara in 1959. This chapter is not about classical electronic music - there are plenty of texts on the subject. Furthermore, this book is aimed at regular people who think that art should reflect something, i.e. that one should not constantly try to break out of existing concepts and conceptual systems to appear as incomprehensible as possible.
Electronic music is a form in which the music has to be interpreted on more levels than the musical.
It is unnecessary to point out that the history of electronic music stretches farther back than the history of hacker culture. One of its main uses has been to display the beautiful side of the computer. Electronic music was the first area in which computers were used to create art, and as opposed to other forms of electronic culture, electronic music has its roots in Europe. The first time a computer played music was in 1957, at Bell Labs in the United States. The difference between, for example, the Hammond organ or Pink Floyd's monophonic synthesizers and the new generation of electronic instruments was that the latter could store rhythms and entire pieces of songs in their digital memory, which could later be modified.