Dance is an expressive activity that combines music and movement. We are interested in both encouraging people to dance, and in measuring the emotional experience of musical expression through movement. The Dance Remixer is a program that transforms any piece of music into something that people can dance to. The program remixes music to add customizable rhythmic elements�for instance, those typical to Latin dance music. The Dance Remixer is a first step toward personalizing how people interact with music, by giving the user the ability to modify its function and emotional content. We are also interested in quantitatively measuring the emotional experience of dancing. What makes dancing enjoyable? How is our enjoyment of music reflected in dance? Specifically, we examine the psychological factors behind Argentine Tango, an improvisational dance that prioritizes the interpretation of music.