As they approach 10 billion digital downloads from their iTunes music store, Apple has unveiled their top 20 all-time best-selling songs, reports Billboard.

Hip-hop acts take up six of those top 20 spots with the Black Eyed Peas locking in No. 1 with "I Got a Feeling" and No. 3 with "Boom Boom Pow." Flo Rida follows behind at No. 7 with "Low" and No. 19 with "Right Round." Kanye West came in at  No. 16 for "Stronger" next to T.I. at No. 17 for "Live Your Life."

As far as the contest goes, Apple plans to give away a $10,000 iTunes gift card to the customer that downloads the 10 billionth song. —Brooklyne Gipson