Rihanna named the Greatest Pop Artist of All Time

After piling up record after record (musically and achievement-wise) on Billboard‘s Pop Songs radio airplay chart, Rihanna reigns as the No. 1 artist over the first 25 years of the survey, which began with the list dated Oct. 3, 1992. Notably, Rihanna has reached historic heights despite having arrived on the chart more than halfway through …