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"Katy Perry has scored her eighth number one on the Billboard Hot 100 with &amp;#039;Roar&amp;#039;.  The singer ends Robin Thicke&amp;#039;s 12-week reign at the top by climbing from two to one on the tally, pushing &amp;#039;Blurred Lines&amp;#039; into second place.   Meanwhile, Eminem makes an impressive debut at number three with &amp;#039;Berzerk&amp;#039; - marking his sixth US top ten - while Avicii holds at seven with &amp;#039;Wake Me Up&amp;#039;.  Lorde leaps 12 to eight with her American debut &amp;#039;Royals&amp;#039;, and Lana Del Rey&amp;#039;s &amp;#039;Summertime Sadness&amp;#039; remix completes the top ten.  Further down the chart, Cyrus vaults 50 to 14 with &amp;#039;Wrecking Ball&amp;#039;, Thicke springs 83 to 25 with &amp;#039;Give It 2 U&amp;#039;, and Justin Timberlake rises from 44 to 29 with &amp;#039;Take Back The Night&amp;#039;.  Big Sean&amp;#039;s &amp;#039;Beware&amp;#039; lifts from 48 to 38, Bruno Mars starts at 60 with &amp;#039;Gorilla&amp;#039;, and Lana Del Rey&amp;#039;s &amp;#039;Young and Beautiful&amp;#039; rebounds 80 to 66.  Elsewhere, Enrique Iglesias debuts at 87 with &amp;#039;Loco&amp;#039;, and Kanye West re-enters at 89 with &amp;#039;Blood on the Leaves&amp;#039;.  The top ten Billboard Hot 100 singles appear below (click where possible for our reviews):  1. (2) Katy Perry: &amp;#039;Roar&amp;#039; 2. (1) Robin Thicke ft. Pharrell, TI: &amp;#039;Blurred Lines&amp;#039; 3. (*) Eminem: &amp;#039;Berzerk&amp;#039; 4. (3) Miley Cyrus: &amp;#039;We Can&amp;#039;t Stop&amp;#039; 5. (5) Jay Z ft. Justin Timberlake: &amp;#039;Holy Grail&amp;#039; 6. (4) Lady Gaga: &amp;#039;Applause&amp;#039; 7. (7) Avicii: &amp;#039;Wake Me Up&amp;#039; 8. (12) Lorde: &amp;#039;Royals&amp;#039; 9. (5) Imagine Dragons: &amp;#039;Radioactive&amp;#039; 10. (9) Lana Del Rey &amp;amp; Cedric Gervais: &amp;#039;Summertime Sadness&amp;#039; Listen to &amp;#039;Roar&amp;#039; below:       "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/music/us-billboard-chart/news/a512824/katy-perry-wins-eighth-us-number-one-with-roar/>