Wikipedia:Today's featured list/September 20, 2019
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Fourteen singles topped the Billboard Hot 100 in 2011. The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Its data, published by Billboard magazine and compiled by Nielsen SoundScan, was based collectively on each single's weekly physical and digital sales, as well as airplay. In 2011, nine acts achieved their first US number-one single, either as a lead artist or a featured guest. Six collaboration singles topped the chart. Pop singers Adele, Britney Spears, Katy Perry and Rihanna (pictured) each earned two number-one songs during the year. One of Adele's songs, "Rolling in the Deep", was the best-performing single of 2011, topping the Billboard Year-End Hot 100. She became the fourth solo female to have multiple songs spend at least five weeks each at number one in one calendar year. Rihanna's "We Found Love" was the longest-running single of the year, having topped the chart for eight consecutive weeks in 2011 and two additional weeks in 2012. (Full list...)