Jessica Biel revealed details on being a new mom, including what song her son likes to listen to.

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On Friday, E! News shared an interview with the actress who revealed that she sings "Somewhere Over the Rainbow" to her baby boy, Silas, who just turned four months old. But is Biel able to hit the right notes when singing the popular hit from The Wizard of Oz?

"Sometimes," she admitted. "Depending on what time in the morning it is."

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Surprisingly enough, Biel said that her pop star husband, Justin Timberlake, is not really the type to sing to his son even though that's one of the main focuses of his career.

"You know, it's hard when it's your business," Biel pointed out. "You don't always bring it home and use that as your casual time."

As Timberlake leaves the home singing to his wife, she mentioned that she is still focused on working in the movie industry.

"I just produced a film that I was working on for about eight years. We finally made it happen," she said. "It's called Devil and the Deep Blue Sea. It's a very tiny independent film and hopefully we will get some distribution and get it out there."

The actress said the movie is a "grief and overcoming tragedy." Other actors involved include Mary Streenburgen, Bryan Batt, Orlando Bloom and Maisie Williams.

Tags: Justin Timberlake Jessica Biel