Chart News: Katy extends record for most 5-million sellers

"Dark Horse" by Katy Perry featuring Juicy J dips from #5 to #6. The song tops the 5 million mark in digital sales this week. It’s Perry’s sixth song to reach this plateau. That’s more than any other artist in digital history. In fact, it’s as many as the next two artists combined. Lady Gaga and Eminem have each had three 5-million-sellers.

Perry’s 5-million-sellers are "Firework" (6,622,000), "E.T." (featuring Kanye West, 5,736,000), "California Gurls" (featuring Snoop Dogg, 5,630,000), "Hot N Cold" (5,511,000), "Roar" (5,377,000) and now "Dark Horse" (5,025,000).