Explore the intersection of music composition and JavaScript programming in this JSConf EU 2013 talk. Dive into the world of pattern-based music composition, drawing parallels between the creative processes of coding and composing. Learn about livecoding environments and discover how to program music using JavaScript in a browser. Follow along as the speaker demonstrates a custom web application for live music creation, and gain insights into the similarities between tracker software and coding. By the end of this 30-minute session, expect to understand the potential of JavaScript for contemporary dance music production and possibly find yourself moving to the beat of code-generated tunes.