Casting Crowns is one of the most popular Christian music groups in the world. While, North Korea is one of the most oppressive nations in the treatment of Christians.

So you wouldn't think the two would mix.

But recently, the group was actually invited to perform inside North Korea. Mark Hall, their lead singer talked about their journey with CBN News Chief International Correspondent Gary Lane.

This is part two of their conversation.

Click here to see the first part of the CBN News interview with Casting Crowns' Mark Hall.