Two songs that feature Bruno Mars top the 3 million mark this week, bringing Mars' collection of 3 million-sellers up to six. He tops the 3 million mark with his first hit, B.o.B's "Nothin' On You" and one of his most recent, "Young, Wild & Free" by Snoop Dogg and Wiz Khalifa. Mars' other 3 million sellers are: "Just The Way You Are" (5,199,000), "Grenade" (5,167,000), Travie McCoy's "Billionaire" (3,218,000) and "The Lazy Song" (3,184,000)). The sublime "Nothin' On You" and the hooky "Grenade" received Grammy nominations for Record of the Year.