Katy Perry Hopes Amy Winehouse 'Finds Peace' (Video)

Katy Perry says her "heart felt really sad" after hearing about Amy Winehouse's death.

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"My husband, who's been clean and sober for almost nine years, you know, I see him working a program and working on himself every single day," Perry said on Good Morning America Monday while promoting her new movie, The Smurfs.

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"And I see how much work it takes to be clean and sober when you have, you know, addiction on your hands," she went on. "So it gave me a real gratefulness for my husband [Russell Brand], who got clean when he was 27. And I feel really sad and I just hope she finds peace."

"He wrote a really lovely piece about her on his website because he knew her, I didn't know her," added Perry of Brand's tribute, which warned of the perils of addiction.

"It's a really poignant and interesting piece about how when you know somebody is dealing with addiction, you dread that phone call," added Perry. "Sometimes that phone call is that person calling up saying, 'I've had enough, I want recovery', sometimes it's that unfortunate phone call, but there will always be a phone call."

Winehouse's father Mitch spoke to fans and reporters gathered outside his daughter's London home Monday.

"I know a lot of you, we've been together for five or six years  and I know you've got a job to do. I'm glad you're all here anyway," he said. "And as to you people in the street, I can't tell you what this means to us. It really is making this a lot easier. We're devastated and I am speechless. Amy was about one thing and that was love. He whole life was devoted to her family and friends and to you guys as well."

Winehouse was found dead Saturday. An autopsy is being performed Monday.