JazzWeek
JazzWeek is a jazz magazine that was co-founded by Ed Trefzger in August 2001. Jazzweek publishes industry news and a weekly top 100 ranking of music played by jazz radio stations.
Collection Method
Originally, the company gathered its own data directly from radio stations, but then switched to Mediaguide, Inc. reporting until that company went out of business in February 2012. From that month onward, JazzWeek returned to doing its own data collection.JazzWeek publishes weekly jazz radio airplay charts and posts an annual spreadsheet of recordings released during the previous 12 months.