Are Yeo Hoon-min and John Kay both singers ?
John Kay (musician) John Kay (born Joachim Fritz Krauledat, 12 April 1944, Tilsit, East Prussia, Germany, now Sovetsk, Kaliningrad Oblast, Russia) is a German-Canadian rock singer, songwriter, and guitarist known as the frontman of Steppenwolf.
Sung Si-kyung Sung Si-kyung (born April 17, 1979) is a South Korean singer, songwriter, radio DJ, host and actor.