It is reported that the reason behind Britney Spears' domination on Billboard music charts is that her songs are relatable. "People find Britney relatable and her songs are good, her fans want to see her dance and be a spectacle. Dance pop is even bigger than before and she has always been a part of that," Fox News quoted Monica Herrera, News Editor of Billboard.com as saying.
However, Spears' last album release 'Circus' had become number one album in 2008. Her 'Circus' tour was the third highest-grossing tour worldwide in 2009. It had grossed around 54.8 million dollars. Following in its footsteps, Britney has recently released 'Hold It Against Me', which immediately shot to the top of the charts.