<P> The site of the opening ceremony, Pyeongchang Olympic Stadium, was built specifically for the Games . The pentagonal stadium seats 35,000 . The organizers for the event said the shape was chosen because it is a combination of different shapes, a circle, a square, and a triangle, which represent heaven, earth, and mankind . No Olympic or Paralympic events will be held at the stadium, which will only be used for the opening and closing ceremonies . The venue will be torn down afterwards . </P> <P> The broadcast of the Opening Ceremony of the 2018 Winter Olympic Games was available in more than 200 countries around the world . </P> <Ul> <Li> Ha Hyun - woo of the band Guckkasten, Ahn Ji - young of the musical duo Bolbbalgan4, Lee Eun - mi and Jeon In - kwon with his band Deulgukhwa performed and sang John Lennon's "Imagine" at the opening ceremony . </Li> <Li> The Rainbow Children's Choir performed an arrangement, with Korean traditional musical instruments, of the national anthem, "Aegukga". The song was written to educate the public about various ethnicities . </Li> <Li> Insooni sang the theme song for the PyeongChang 2018 Olympic Torch Relay, "Let Everyone Shine". </Li> </Ul> <Li> Ha Hyun - woo of the band Guckkasten, Ahn Ji - young of the musical duo Bolbbalgan4, Lee Eun - mi and Jeon In - kwon with his band Deulgukhwa performed and sang John Lennon's "Imagine" at the opening ceremony . </Li>

Who is performing at the 2018 olympics opening ceremony