Pop star Beyonce Knowles, right, recorded her hit song Irreplaceable to "empower" women who want to end a bad relationship.

Pop star Beyonce Knowles, right, recorded her hit song Irreplaceable to "empower" women who want to end a bad relationship.

The star was inspired to cut the disc after playing the role of Deena Jones in Dreamgirls. She went into the recording studio immediately after filming ended to capture her feelings on a substrate.

"Because I had been playing this character who was so caged, I had to do something with all that energy I'd been holding inside.

"So I probably made my most emotional, aggressive record ever. I was able to be things I'm not."

She calls Irreplaceable her "secret weapon", adding: "It's a celebration of a break up and makes women feel like they're worth more.

"I'd never had so many women say that they'd put on the record [to help them] not pick up the phone and take him back. I'm walking down hallways and seeing fans yelling 'To the left, to the left'."- Wenn