It's undeniable that the Pussycat Dolls have what it takes to put out a successful album. Their 2005 Interscope debut, "PCD," has sold 2.9 million copies in the United States, according to Nielsen Sou

It's undeniable that the Pussycat Dolls have what it takes to put out a successful album. Their 2005 Interscope debut, "PCD," has sold 2.9 million copies in the United States, according to Nielsen SoundScan, and spawned such chart-topping hits as "Don't Cha" and "Buttons" featuring Snoop Dogg.

But when lead singer Nicole Scherzinger tried to go solo last fall, the response couldn't have been more different. Four singles fizzled on the charts and at radio, and her album, "Her Name Is Nicole," was shelved indefinitely.

So for now, the focus is back on the Pussycat Dolls, who return this week with "Doll Domination." Serviced in May, lead single "When I Grow Up," produced by Rodney "Darkchild" Jerkins, reached No. 9 on the Billboard Hot 100 just four weeks after entering the chart and No. 5 on the Pop 100.

"I think we had an advantage with our first album being so successful. We knew songs like 'Don't Cha,' 'Buttons' and 'Stickwitu' helped to set the bar for us and steered us in the direction, because before that we didn't even know what the sound for the PCD was going to be," Scherzinger says.

In addition to the Missy Elliott-assisted "Whatcha Think About That," for which a video was filmed recently in Los Angeles, other tracks include the Snoop-featuring "Bottle Pop," the R. Kelly duet "Out This Club," the Tina Turner-inspired "In Person" and "Happily Never After," which finds Scherzinger narrating the story of a woman who walks out on a dead-end relationship.