"House of Cards" season 3 spoilers reveal that Frank Underwood will meet new set of friends and foes when the show comes back, as cast Kevin Spacey shows off his singing chops for charity.

In the "House of Cards" season 3 spoilers from E! News, it was revealed that new faces will be introduced next season.

"Will they be friend or foe? We're not telling, but get ready to meet Dr. Buzdar, a doctor in her 40s who is described as 'very smart," wrote Tierney Bricker.

As added "House of Cards" season 3 spoilers, the writer revealed that Anto Ivonovich, "a Russian man described as 'formidable' and 'refined' will also be added to the cast as a recurring character.

Meanwhile, "House of Cards" season 3 cast Kevin Spacey showed off his singing chops as well as his harmonica skills for a charity event on Monday night at The Harman Center in Washington D.C.

"Good evening, and welcome to an evening to benefit the Francis Underwood Super PAC. I do apologize if you were misinformed by the intentions of this occasion," Kevin Spacey, assuming the persona of his alter ego Frank Underwood, told the crowd.

The USA Today reported that "House of Cards" season 3 cast Kevin Spacey belted out songs such as "You Make Me Feel So Young," "You're Nobody 'Til Somebody Loves You," "Bridge Over Troubled Water," "Luck Be A Lady," and "I've Got the World On a String," which is apropos to his character Frank Underwood in the "House of Cards."

He also showed off his harmonica skills while belting out "Piano Man."

"I'm gonna do some stuff I've never done. I didn't know the harmonica four days ago," Kevin Spacey said.

The USA Today said that "House of Cards" season 3 cast Kevin Spacey already proved that he could carry a decent tune based on the Bobby Darin biopic, "Beyond the Sea."