This Week in Billboard Chart History: In 2009, Lady Gaga Led the Hot 100 With Her First No. 1, 'Just Dance' - Billboard
 

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Billboard
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This Week in Billboard Chart History: In 2009, Lady Gaga Led the Hot 100 With Her First No. 1, 'Just Dance'
Billboard
Your weekly recap celebrating significant milestones from more than seven decades of Billboard chart history. Jan. 15, 2000. The first song to ascend to No. 1 on the Billboard Hot 100 in the 2000s? Christina Aguilera earned the honor with "What a Girl ...




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Courtesy of http://www.LadyGagaMusic.co