ChartReign Power^™

Why the order is not the chart's order

On the chart, one song is #1. On the timeline, the artist at the top is the one with the most chart power that week, and that counts everything they had charting. An artist with songs at #8 and #11 can outrank one whose only real hit is at #2 — two big records at once beat one bigger one. That is deliberate, and it is the whole point: the chart ranks songs, the model ranks artists.

How a week is scored

1. Every position is worth points. A #1 is worth 100, and the points halve every 20 places down: #21 is worth 50, #41 is worth 25, #100 is worth 3.2. Being at the top matters far more than being on the chart.
2. Credits are shared. A duet splits its points between the two names. A featured artist takes 30% and the lead the rest.
3. More songs help, with diminishing returns. An artist's strongest song counts in full, the second at 65%, the third at 42%, and so on — each further song at 65% of the one before. Twelve songs on the chart at once is a big week, not twelve times a big week.
4. Power Share is the artist's slice of all the points on the chart that week, as a percentage. Because it is a share of the whole chart, a week in 1965 and a week in 2025 are measured on the same scale. Power Index is the same thing with the week's leader set to 100, for the bars.

From weeks to careers

Career Power adds an artist's Power Share up over every week they charted: the area under their curve, in share-weeks. A number-one single alone is worth about 3.5 a week. Peak Power is their highest smoothed share (an average that fades over about 6 weeks, so one freak week does not define a career), and Peak Year their best 52 weeks in a row. Weeks at #1, top-five weeks, longevity, dominance and comebacks all follow from the same weekly rows — nothing is typed in by hand.

Songs have their own figure

Record Power measures a song on its own: each week on the chart is worth its position as a share of a full chart — a #1 week is 3.5, whoever recorded it and whatever else they had out — added up over the run. It is what the Songs leaderboard ranks by. On an artist's page the same song shows power contributed instead: what it earned that artist, after the credit split and the diminishing returns. A duet shows half on each page; the two figures sit side by side so they are never confused.

Filters and eras

Every figure is available three ways: all songs; without holiday songs, so December re-entries do not crown the same few artists every year; and new music only, counting only the two years after a song's release. Eras cut the same numbers by decade or year; extended careers add a band and its members together with stated weights. The exact constants live in one configuration file and the full model is written down formula by formula, so every figure can be recomputed from the chart positions alone.