Mainstream Top 40

The Mainstream Top 40 Airplay is a 40-song music chart published weekly by Billboard Magazine that ranks the most popular songs of pop music being played on a panel of Top 40 radio stations in the United States. The rankings are based on radio airplay detections as measured by Nielsen Broadcast Data Systems, a subsidiary of the U.S.' leading marketing research company. Consumer researchers, Nielsen Audio, refers to the format as contemporary hit radio (CHR).


The Mainstream Top 40 Airplay is a 40-song music chart published weekly by Billboard Magazine that ranks the most popular songs of pop music being played on a panel of Top 40 radio stations in the United States. The rankings are based on radio airplay detections as measured by Nielsen Broadcast Data Systems, a subsidiary of the U.S.' leading marketing research company. Consumer researchers, Nielsen Audio, refers to the format as contemporary hit radio (CHR).
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