Miley Cyrus’ “Party in the U.S.A.” climbs to the number one spot on iTunes singles chart after three straight weeks at number two. The song was downloaded more than any other song on the site last week beating out “Watcha Say,” by Jason DeRulo, “I Gotta Feeling,” by the Black Eyed Peas, “Paparazzi,” by Lady GaGa and “Down” by Jay Sean. Pearl Jam’s new album Backspacer tops the album downloads, beating out Jay-Z’s The Blueprint 3, Life Starts Now by Three Days Grace, David Crowder Band’s Church Music and Mika’s The Boy Who Knew Too Much.