Walking-through scenarios is an effective requirements-discovery technique, but scenarios can differ widely in their abstraction levels and representation forms. However, determining the right form of scenarios for different requirements tasks remains an open question-one that the Art-Scene scenarios environment is investigating. Art-Scene is a tool that supports rich-media scenarios' use during requirements discovery. Rich-media scenarios can improve discovery by cueing stakeholders to recognize more events that a system will have to handle. This article describes Art-Scene's architecture and guidelines to help developers use rich media in scenarios, and it reports early evaluation and lessons learned.