For jazz musicians and supporters in Milwaukee, the sound represents more than a performance. Now, a new free web app is helping more people find where that music is happening. The new app, MKE JAZZ.LIVE, was created to help fans find live jazz performances across Milwaukee. One of the hard things to do is to find when and where they're playing," Catral said. The free web app tracks shows at dozens of venues, helping fans discover performances and plan when they want to hear live music.