As Apple's store iTunes celebrated the sell of its 10 billionth song Wednesday, the store released a list of the most downloaded songs topped by U.S. artists the Black Eyed Peas and Lady Gaga.

The all-time most downloaded song is The Black Eyed Peas' I Gotta Feeling, Apple said on the iTunes website. The band's Boom Boom Pow scored the number-three song.

Lady Gaga's Poker Face was number two, Jason Mraz I'm Yours was number four and Coldplay's Viva la Vida number five.

Click here to see the top 20 songs.