It seems like Mark Ronson and Bruno Mars are an unstoppable pop music force. For the eighth week in a row, their collaborative hit single "Uptown Funk" crowns the Billboard Hot 100, despite major gains from the release of Fifty Shades of Grey.

"Uptown Funk" leads the biggest music in the country for the eighth week in a row, according to Billboard. The track leads the chart thanks to a major dip in Grammys-related sales, as it reclaims the No. 1 spot on the Digital Downloads chart.

The Grammys sales drop helped lock Ed Sheeran's "Thinking Out Loud" away from the top spot, as his track lost 36 percent of its sales, despite consistent radio play and streaming.

The passing of time after the Grammys also caused Rihanna's Kanye West and Paul McCartney to drop down two spots on the Hot 100 as it descends from No. 4 to No. 6. Despite a rise in radio play and streams, "FourFiveSeconds" declined 34 percent in sales after the buzz of the group's Grammy performance died down.

Between Sheeran and Rihanna, two new songs climb the chart. Maroon 5's "Sugar" returns to its No. 4 summit.

More interestingly, Ellie Goulding's Fifty Shades of Grey soundtrack contribution "Love Me Like You Do" rises three spots to No. 3, thanks to hype from the movie, which hit No. 1 in the U.S. box office. Goulding got a major 20 percent sales bump, moving 205,000 downloads. And Goulding wasn't the only artist to get a bump on the top 10 thanks to Fifty Shades. The Weeknd's "Earned It" broke into the summit portion of the chart, moving from No. 12 to No. 9 also thanks to hype from the movie.

The rest of the Hot 100's top 10 is filled with familiar singles and artists. Hozier's "Take Me to Church" stumbled two spots to No. 5, and Taylor Swift sits at Nos. 7 and 8 with "Blank Space" and "Style," respectively. Meghan Trainor fills out the chart at No. 10 with her Title track "Lips Are Movin'."

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