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Big Sean's Dark Sky Paradise shoots to #1 on the iTunes album chart off a phenomenal setup from two monster singles at three radio formats, while Drake continues to dominate the landscape with his Valentine's Day surprise still sitting at #2, If You're Reading This It's Too Late.

On the singles leaderboard, the story is the massive staying power of Mark Ronson f/Bruno Mars' "Uptown Funk," which remains parked at #1 as the song finishes a record sixth week atop the airplay charts at Top 40 radio. RCA also saw debuts from Kelly Clarkson with "Someone" (#7) and Pitbull with "Time Of Our Lives" (#10); meanwhile, the Fifty Shades Of Grey Soundtrack continues to tie up two slots in the Top 10 with "Love Me Like You Do" from Ellie Goulding and The Weeknd's "Earned It" going strong.