??? (Kim Bum Soo), born January 26, 1979, is a South Korean R&B and soul singer famous for his smooth vocals and emotive ballads. Particularly, he is noted for the song ???? (Bo go ship da), the title of which means 'I miss you' in English. This song became the theme song of Korean drama ??? ?? (Stairway to Heaven). Kim Bum Soo is the first Korean artist to make a mark on the North American music charts, with his song 'Hello Goodbye Hello' making the US Billboard chart in 2003.