Sangwoo Kim (Roy Kim): A Winter Melody Born from Superstar K4 Sangwoo Kim, better known as Roy Kim (로이킴), is a Korean singer-songwriter whose journey began unexpectedly on the stage of Mnet’s talent show Superstar K 4 in 2012. What started as an audition for fame quickly blossomed into a remarkable musical career marked by captivating melodies and heartfelt performances—a testament to his unwavering passion for music and his innate ab…