JazzWeek is the publisher of national airplay charts for jazz, smooth jazz and world music radio in the U.S. Trefzger Media provided content management, integration of XML-based airplay data and subscription capabilities as well as site design. We also developed the site summit.jazzweek.com for JazzWeek's annual conference. Currently, we are redeveloping JazzWeek using the Drupal open-source content management system.