Question: Which brand of music are American vocalist Sammy Hagar, and South Korean musician Jung Yong-hwa known for?
Sentence (from "Jung Yong-hwa"): Jung made his television debut in "You're Beautiful" (2009), and has since starred in television dramas "Heartstrings" (2011), "Marry Him If You Dare" (2013) and "The Three Musketeers" (2014).
Relevant evidence: No