North Korea children playing the guitar. Creepy as hell

This is an amazing video of North Korea cute children who are playing large size guitar very well. This is a footage of unforgettable guitar performance which first appeared on North Korean website Daum TV few days before. They are the five trained guitar players who took specialized training before performing this act. They seemed like playing guitar actually, but the reality is different from what we are seeing in this video? Everyone confused and want to know what the hell is up with the large size guitars?
Some guitar professionals stated that they are not children in actual, they are reboot who trained several times to perform this unbelievable act on the stage. But in reality they just looked like playing large size guitars, actually they are laying cellos. Cello is an instrument that sound an in appearance looks like a real guitar. Definitely, they have kid-sized guitars in North Korea. Anyhow, they looked stunning in this attention grabbing and standing avision guitar performance.