Did you know that the voice behind Netflix’s KPop Demon Hunters breakout character, Rumi, is a former SM Entertainment trainee? Andrea “Ejae” Cho didn’t debut in a K-pop girl group—but she still became a star. Instead of performing on stage, she helped create the music we love. Now, she’s gone viral again, this time as Rumi’s singing voice and co-writer of the hit soundtrack. Yes, that emotional high note in “Golden”? That’s Ejae.