Lady Gaga's 'Judas' Tops iTunes, Battles Rihanna For No.1 Spot

Although it was only released, or rather leaked, on Friday, Lady Gaga's new single "Judas" is in the running to debut at No.1 on Billboard's Hot 100 next week. However Gaga will have contend will fellow pop diva Rihanna's current hit "S&M," the sales of which have been boasted by a new "Rihmix" featuring Britney Spears. Industry insiders predict the collaboration could sell nearly 300,000 downloads of the track.

According to Billboard.com, "'Judas' would have to sell north of 350,000 -- close to 400,000 -- with less than two and-a-half days of sales in the week, in order to possibly debut at No. 1 on the Hot 100. Also playing a role in its initial Hot 100 ranking will be the radio audience impressions "Judas" will garner through the end of the airplay tracking period which runs through Tuesday (April 19). A fast first week start at radio, similar to "Born This Way" (78.6 million), would certainly help Gaga's No. 1 cause."

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Vid Pick: Rihanna "Who's That Chick

Rihanna continues her march out of Rated R darkness and into Loud's marvelous light with her new video for "Who's That Chick." A deliriously addictive track produced by David Guetta combined with enough flourescent, candy-coated colors to make "Rude Boy" look like a black-and-white silent movie. Take a look below:

New Music: Rihanna "Only Girl( In The World)"

The hottest bitch in heels has returned. Rihanna debuted her new track "Only Girl ( In The World)" this morning on On Air With Ryan Seacrest. Rihanna turns in a particularly stronger vocal than on her previous singles, and the music has an upbeat, European house feel, eschewing the dark aggressiveness of her previous Rated R era. Download it below:

Rihanna-Only Girl (In The World)