Artists · Global Music Power
Robert John
Charting Apr 13, 1968 → Mar 5, 1983 · 103 weeks with chart power
Charted in 2 of 2 markets — Billboard Hot 100 96 wk, UK Singles Chart 13 wk
Billboard Hot 100 and UK Singles Chart combined, weighted · How it works
Each week an artist's share is the weighted mean of their Power Share across Billboard Hot 100 ×1 and UK Singles Chart ×0.45 (weights ∝ √population, US = 1). The divisor is every chart's weight, so a number one is worth the same share in any era — and a week before every chart exists sums to less than 100.
- Peak Power
- 1.74%
- week of Oct 27, 1979
- Career Power
- 77
- share-weeks
- Weeks at #1
- 0
- weeks as the top artist
- Peak Year
- 39
- February 1979 – February 1980
- Peak Five Years
- 47
- March 1978 – March 1983
- Top-five weeks
- 2
- weeks ranked 1–5
- Longevity
- 103
- weeks with chart power
- Dominance
- 2.45%
- week of Oct 6, 1979
- Comebacks
- 1
- September 1979
| Kind | Trough began | Returned | Trough weeks | Longest absence | Prior peak | Return share |
|---|---|---|---|---|---|---|
| After absence | Jul 22, 1972 | Sep 1, 1979 | 371 | 356 | 1.45% | 1.02% |
Computed from stored weekly power rows (config version 4, Sep 21, 2026).
Exponentially smoothed share of the week's total power (the primary metric).