Component chart
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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. Most international charts do not use component charts, but instead use only one mean of calculation, usually sales.
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[edit] Hot 100
The Hot 100 is calculated from three component charts.
- Airplay: Hot 100 Airplay
- Sales: Hot Digital Songs and Hot 100 Singles Sales
Notes: When tabulating sales, the raw amount is left unaltered for tabulation of the sales charts by themselves. However, when points are being tabulated for the Hot 100, sales in both sales components are multiplied by two before being added.
[edit] Pop 100
The Pop 100 is calculated from three component charts.
- Airplay: Pop 100 Airplay
- Sales: Hot Digital Songs and Hot 100 Singles Sales
Notes: When tabulating sales, the raw amount is left unaltered for tabulation of the sales charts by themselves. However, when points are being tabulated for the Pop 100, sales in both sales components are multiplied by two before being added.
[edit] Hot R&B/Hip-Hop Singles & Tracks
The Hot R&B/Hip-Hop Singles & Tracks is calculated from two component charts.
- Airplay:Hot R&B/Hip-Hop Airplay
- Sales:Hot R&B/Hip-Hop Singles Sales
Notes:Digital downloads are not counted towards the Hot R&B/Hip-Hop Singles & Tracks
[edit] Hot Digital Songs
Hot Digital Songs is calculated from one component chart (although it is a component in the sense that multiple versions chart).
- Sales: Hot Digital Tracks
Notes: The Hot Digital Songs is made up of the total points of each song on Hot Digital Tracks. Often only one track of a song charts, and all points of the song are identical to the amount of points it would receive on both charts. However, it is very common nowadays to have remixes, radio edits, alternate mixes, live performance versions, etc chart. Each version of the song is then added up to form the total point tabulation. Even if the song fails to chart on the Hot Digital Tracks, each version sold will be calculated towards total tabulation.
[edit] Dance & Country charts
Although there are three dance charts (Hot Dance Club Play, Hot Dance Singles Sales, and Dance Radio Airplay), it should be noted that none of these charts are components of each other, nor are they a larger chart formed from the other. The Country music chart is not used to compile a larger chart either.
