Belarusian medieval folk band Stary Olsa performed Metallica’s classic song “One“. This video gives the answer to this question “If One were written about 1,000 years ago“.
Information about Stary Olsa via Wikipedia:
Stary Olsa is one of the few Belarusian bands enjoying popularity outside Belarus. The band has received numerous positive critical reviews. They are also known for covering modern rock tracks using their medieval instruments, and released a cover album, via a Kickstarter campaign, in 2016.
Here is the medieval version of Metallica’s One. It’s incredible, enjoy!