Which singer is from South Korea, Seo Min-woo or John Mayer?
Seo Min-woo: Seo Min-woo (Hangul: 서민우; born February 8, 1985) is a South Korean idol singer and actor. John Mayer: John Clayton Mayer ( ; born October 16, 1977) is an American singer-songwriter, guitarist, and producer.
Seo Min-woo