You are aware of the Semantic Web, but you haven’t got time to develop a Semantic Web application yourself? During this tutorial we challenge the Semantic Web technologies on the Web 2.0 ground of realizing a mash-up that reuses, transforms and combines existing data taken from the open Web. RSWA tutorial explains how to develop step-by-step a Semantic Web application that expects a music style as an input; retrieves data from online music archives and event databases; merges them and let the users explore events related to artists that practice the required style. The result is a Semantic Web Application we named Music Event Explorer or shortly meex; try it out at