"Umbrella" by Rihanna featuring Jay-Z tops the 4 million mark in digital sales this week. The song topped the Hot 100 for seven consecutive weeks in June and July 2007. This Rihanna's fourth 4 million-seller, following "Disturbia" and a pair of "rap/sung" collabos on which she was featured: Eminem's "Love The Way You Lie" and T.I.'s "Live Your Life." It's Jay-Z's second 4-million-seller, following "Empire State Of Mind," his 2009 collabo with Alicia Keys.
