Seriously, which one is it?
Britney - How I Roll
Listen to a snippet of Britney's next single, "How I Roll"
Dr Luke, the producer behind Britney 's forthcoming album "Femme Fatale " has released a snippet of the popstar's next single, online.
Listen to "How I Roll " below!
And if truth be told, they've both got a great set of lungs on them!