Which brand of music are American vocalist Sammy Hagar, and South Korean musician Jung Yong-hwa known for?
Jung Yong-hwa: Jung Yong-hwa (; ] ; born June 22, 1989) is a South Korean musician, singer-songwriter, record producer and actor. Jung Yong-hwa:  He is the leader, lead vocalist and rhythm guitarist of the rock band CNBLUE. Sammy Hagar: Samuel Roy Hagar (born October 13, 1947), also known as The Red Rocker, is an American rock vocalist, guitarist, songwriter, musician and entrepreneur.
rock