To all who doesn't know. Well JJ Lin vocals was already good and he even won on a singing competition in Singapore. He then visit US on 2005 to further trained his vocal strength and his trainer was none other than Sett Riggs who was also the vocal coach of Michael Jackson and Mariah Carey. If you think your a professional singer,you must be ashamed to yourself coz you doesn't even know JJ vocal coach in the US who trained his vocal strength to be more powerful.
