In 2014, South Korea produced an alternative version of their national anthem “Aegukga,” which was two keys lower in order to make it easier for kids in school (especially males going through puberty) to sing. – WTF Fun Facts
Source: https://blogs.wsj.com/korearealtime/2014/09/02/is-south-koreas-national-anthem-too-high-pitched/
I believe you guys posted North Korea’s national anthem instead of South Korea’s Their names are both Aegukga – Love Country Song lol