Question: What is the name of this South Korean musician, singer-songwriter, record producer and actor in the rock band CNBLUE, who wrote the song You, My Star?
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