Beyonce Knowles, Flo Rida and Lady Gaga all made this year's list of chart toppers. (Photo by Getty Images | Getty Images | Photo Agency)
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Number 1 Music Artists of 2009
See all the artists who have topped the Billboard charts for singles and albums in 2009.
Top of the Charts
We've compiled a list of every artist who had a number one single or album in 2009 and put them in one place. The top singles are listed in the first 12 spots followed by artists who had top albums.
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