Her 2009 smash "Poker Face" tops the 6 million mark in sales this week. Gaga has two of the three songs that have reached 6 million in digital sales. "Just Dance" reached 6 million three weeks ago. The only non-Gaga song that has sold 6 million digital copies is the Black Eyed Peas' "I Gotta Feeling," which leads all songs with digital sales of 6,927,000 copies.