October 19, 2011 11:00 AM

Jackson Lee/Splash News Online

Happy Halloween!

Gwyneth Paltrow takes son Moses, 5½, to shop for costumes on Saturday in New York City.

Promoting Coldplay’s latest album, Mylo Xyloto, husband Chris Martin tells CBS that fatherhood has changed his professional life as a musician.

“It’s made it more focused,” he says. “And you have a purpose. I like what it does. Just the idea of having to work hard so your kids are okay.”

The couple are also parents to daughter Apple, 7.

RELATED: Gwyneth Paltrow: ‘I Felt Like a Zombie’ with Postpartum Depression

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