Pitbull and Ke$ha spend a second week at No. 1 on the Billboard Hot 100 with "Timber." Meanwhile, Katy Perry jumps into the top five with "Dark Horse" (featuring Juicy J), which also crowns the Digital Songs and On-Demand Songs charts.
Billboard celebrates the 70th anniversary of the chart that's now known as Hot Country Songs by taking a look at the biggest No. 1 songs of each decade of the chart's history, the acts with the most No. 1 songs of all time, and more.
Pharrell Williams’ “Happy” (Back Lot) returned to the top of the U.K. singles chart yesterday (Sunday), as Ellie Goulding’s “Halcyon” (Polydor/Universal) started a second week at No. 1 on the artist album chart.
Katy Perry has officially scored three million-selling albums. Her "PRISM" passed the 1 million sales mark this week, according to data from Nielsen SoundScan, joining her previous million-sellers "One of the Boys" and "Teenage Dream."