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"Katy Perry is currently outselling Lady Gaga by two copies to one in their US chart race. The star&amp;#039;s new single &amp;#039;Roar&amp;#039; is facing competition from Gaga&amp;#039;s &amp;#039;Applause&amp;#039; after it was rush-released earlier this week to avoid a leak.      Perry is on course to sell around 450,000 copies of her new single during its first week on sale in the States, while Gaga is forecast to shift 200k to 225k of her new track, reports Billboard. If both songs sell more than 200k during their first week, it will mark the first time two tracks have sold that many copies in their debut week since last October.   &amp;#039;Roar&amp;#039; is the first cut to be lifted from Katy Perry&amp;#039;s new album Prism, while &amp;#039;Applause&amp;#039; is the lead single from Lady Gaga&amp;#039;s forthcoming collection ARTPOP. Lady Gaga&amp;#039;s new single &amp;#039;Applause&amp;#039; has broken the Top 5 in the UK since its release, but has yet to overtake Ellie Goulding&amp;#039;s &amp;#039;Burn&amp;#039; at number one. Perry&amp;#039;s &amp;#039;Roar&amp;#039; will be released in the UK on September 8. Watch the lyric video for Lady Gaga&amp;#039;s &amp;#039;Applause&amp;#039; below:      Katy Perry visits Madagascar with UNICEF - photo gallery:  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/music/news/a507320/katy-perrys-roar-ahead-of-lady-gagas-applause-in-us-chart-race/>