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Top 40 Mainstream Chart (often also called Mainstream Top 40 or Top 40/CHR) is an airplay chart from Billboard Magazine and is featured in both sister publications Billboard and R&R
R&R (magazine)

R&R is a weekly music trade publication that follows the radio industry and tracks the monitoring of current songs by format, station and audience cumes....
. It is often mistaken for and confused with the Pop 100 Airplay
Pop 100 Airplay

The Pop 100 Airplay is a chart created in 2005 and released weekly by Billboard magazine in the United States. It measures mainstream radio airplay, and is one of the three component charts, along with the Hot 100 Singles Sales and Hot Digital Songs charts, that determine the chart positions of singles on the Pop 100 chart....
 charts (formerly Top 40 Tracks
Top 40 Tracks

Top 40 Tracks is a defunct chart airplay chart from Billboard Magazine. It was created in 1998, when Billboard Magazine changed the airplay profile of The Hot 100 Airplay to include more R&B, Country music, and Rock and roll stations to its profile ....
). Whereas the Top 40 Mainstream charts and Pop 100 Airplay both measure the airplay of songs played on Mainstream stations playing pop-oriented music, the Pop 100 Airplay (like the Hot 100 Airplay
Hot 100 Airplay

The Hot 100 Airplay is a chart released weekly by Billboard magazine in the United States. It measures radio airplay, and is one of the three component charts, along with the Hot 100 Singles Sales and the Hot Digital Songs charts, that determine the chart positions of singles on the Billboard Hot 100....
) measures airplay based on statistical impressions, while the Top 40 Mainstream chart uses the number of total detections.






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Top 40 Mainstream Chart (often also called Mainstream Top 40 or Top 40/CHR) is an airplay chart from Billboard Magazine and is featured in both sister publications Billboard and R&R
R&R (magazine)

R&R is a weekly music trade publication that follows the radio industry and tracks the monitoring of current songs by format, station and audience cumes....
. It is often mistaken for and confused with the Pop 100 Airplay
Pop 100 Airplay

The Pop 100 Airplay is a chart created in 2005 and released weekly by Billboard magazine in the United States. It measures mainstream radio airplay, and is one of the three component charts, along with the Hot 100 Singles Sales and Hot Digital Songs charts, that determine the chart positions of singles on the Pop 100 chart....
 charts (formerly Top 40 Tracks
Top 40 Tracks

Top 40 Tracks is a defunct chart airplay chart from Billboard Magazine. It was created in 1998, when Billboard Magazine changed the airplay profile of The Hot 100 Airplay to include more R&B, Country music, and Rock and roll stations to its profile ....
). Whereas the Top 40 Mainstream charts and Pop 100 Airplay both measure the airplay of songs played on Mainstream stations playing pop-oriented music, the Pop 100 Airplay (like the Hot 100 Airplay
Hot 100 Airplay

The Hot 100 Airplay is a chart released weekly by Billboard magazine in the United States. It measures radio airplay, and is one of the three component charts, along with the Hot 100 Singles Sales and the Hot Digital Songs charts, that determine the chart positions of singles on the Billboard Hot 100....
) measures airplay based on statistical impressions, while the Top 40 Mainstream chart uses the number of total detections. Arbitron
Arbitron

Arbitron is a radio audience research company in the United States which collects listener data on radio audiences similar to that collected by Nielsen Media Research on television audiences....
 sometimes refers to the format as Pop Contemporary Hit Radio.

Chart critera

There are forty positions on this chart and it is solely based on radio airplay and is a component chart
Component chart

A Component chart is a chart which is used to calculate a more primary chart. The practice is mostly used by Billboard Magazine in the United States....
 of the Billboard Hot 100
Billboard Hot 100

The Billboard Hot 100 is the United States music industry standard Single popularity chart issued weekly by Billboard magazine. Chart rankings are based on airplay and sales; the tracking-week for sales begins on Monday and ends on Sunday; while the airplay tracking-week runs from Wednesday to Tuesday....
. 130 Top 40 Mainstream radio stations are electronically monitored 24 hours a day, seven days a week by Nielsen Broadcast Data Systems
Nielsen Broadcast Data Systems

Nielsen Broadcast Data Systems, better known as BDS, is a service that tracks monitored radio, television and internet airplay of songs based on the number of spins and detections....
. 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
Arbitron

Arbitron is a radio audience research company in the United States which collects listener data on radio audiences similar to that collected by Nielsen Media Research on television audiences....
 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
American Top 40

American Top 40 is an internationally-radio syndication, independent radio programming created by Casey Kasem, Don Bustany, Tom Rounds and Ron Jacobs....
 used this chart as its main source.

See also

  • List of number one Top 40 Mainstream hits
    List of number-one Top 40 Mainstream hits

    This is a list of number-one Top 40 Mainstream hits in the United States by year from the Top 40 Mainstream. Every chart is on a week-ending format....


External links