JazzWeek
JazzWeek, headquartered in Rochester, NY, is a subscription publication co-founded by publisher and editor Ed Trefzger in August 2001. JazzWeek publishes industry news and a weekly top 100 ranking of the music played on Jazz and Smooth Jazz radio stations' airplay charts.
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.
Since 2002, with the exception of 2006, the publication hosts JazzWeek Summit, where jazz radio stations and record labels with jazz artists gather for a three-day trade conference. All but two were hosted in JazzWeek’s headquarters city, Rochester, N.Y., while the 2005 Summit was in Syracuse, N.Y., and the 2012 Summit was held in Detroit.
JazzWeek website.
...
Wikipedia