REplay PLAYer is an audio computer program based on the paradigms of granular synthesis. The program de-constructs a given sound file and re-composes it by using real-time composition algorithms – a field of research that has been investigated by Karlheinz Essl since the mid-1980s. With this project, the author is following once again his vision of a music “that is composed, as if from itself (auto-poetic), at the moment of its sounding.”

REplay PLAYer can be used as a tool to generate an infinite and every-changing sonic stream from a single sound file for artistic, compositional or merely recreational purposes. It can also be regarded as a computer-based instrument for live performances, as an interactive sound installation, or as a generator for ambient music.