Beyonce Knowles is refusing to budge at the top of the US singles chart, scoring a fifth successive week at number one with her PINK PANTHER theme CHECK ON IT.

British sensation James Blunt's hit YOU'RE BEAUTIFUL stands firm at number two, while rapper Nelly's GRILLZ is another non-mover at three.

Meanwhile, Willie Nelson's ode to gay cowboys, COWBOYS ARE FREQUENTLY SECRETLY (FOND OF EACH OTHER), scores the country legend the highest debut on the new chart.

The iTunes-only cover of Ned Sublette's 1980s hit enters at number 52 - the first time Nelson has been on the chart since his BEER FOR MY HORSES duet with Toby Keith in 2003.