Vivid is a Haskell library for music creation and sound synthesis, using the SuperCollider sound synthesis engine for real-time “rendering” of audio. Vivid allows users to synthesize and modify audio live in real time, or to render audio files of compositions in a fraction of real time. This demonstration will be an overview of both Vivid’s usage and features of its core design. Vivid uses many features of Haskell, both to enable safety and expressiveness and to regain features more commonly found in dynamic musical languages. […]