Los Angeles, California based indie pop group Lovelytheband had their 2018 single "Broken" acoustically rocked out in three-part harmony by Oligo Bom.
There's not a single piece of information that I could find regarding Oligo Bom, but based on one of their responses to a comment on this video, it can be assumed that they speak Korean. Are they from Korea? My guess is that yes, they more than likely are.
