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For other meanings see pop song.

Top 40 Mainstream, also known as Pop Songs, is an airplay chart from Billboard magazine. It was often mistaken for and confused with the now discontinued Pop 100 Airplay charts (formerly Top 40 Tracks). Whereas the Top 40 Mainstream charts and Pop 100 Airplay both measured the airplay of songs played on Mainstream stations playing pop-oriented music, the Pop 100 Airplay (like the Hot 100 Airplay) measures airplay was based on statistical impressions, while the Top 40 Mainstream chart used the number of total detections. Arbitron sometimes refers to the format as Pop Contemporary Hit Radio. In the June 20, 2009 issue the Top 40 Mainstream chart replaced the Pop 100 Airplay chart.

Mariah Carey, Lady Gaga and Beyonce Knowles are the musical acts with the most number ones - each having six #1's. Britney Spears, Justin Timberlake and Avril Lavigne are on the second place, each of them having five no. 1 hits,[1] with Boyz II Men and Black Eyed Peas being the most succesful bands, with three number ones each. JoJo became at the age of thirteen, the youngest solo artist to have a number-one single in the United States, when "Leave (Get Out)" peaked at #1. The current number one song charting is Telephone by Lady Gaga featuring Beyonce.

Chart criteria

There are forty positions on this chart and it is solely based on radio airplay and is a component chart of the Billboard Hot 100. 132 Top 40 Mainstream radio stations are electronically monitored 24 hours a day, seven days a week by Nielsen Broadcast Data Systems. Songs are ranked by a calculation of the total number of spins per week with its "audience impression", which is based upon exact times of airplay and each station's Arbitron listener data.

Songs receiving the greatest growth will receive a "bullet", although there are tracks that will also get bullets if the loss in detections doesn't exceed the percentage of downtime from a monitored station. "Airpower" awards are issued to songs that appear on the top 20 of both the airplay and audience chart for the first time, while the "greatest gainer" award is given to song with the largest increase in detections. A song with six or more spins in its first week is awarded an "airplay add". If a song is tied for the most spins in the same week, the one with the biggest increase that previous week will rank higher, but if both songs show the same amount of spins regardless of detection the song that is being played at more stations is ranked higher. Songs that fall below the top 20 and have been on the chart after 26 weeks are removed and go to recurrent status.

Use in countdown shows

From January 9, 1993 up until its last first-run show in January 28, 1995, American Top 40 used this chart as its main source.


  1. ^ Billboard Magazine Lady Gaga, Beyonce Match Mariah's Record. Accesed on 17th March 2010

See also

External links



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