(Photo : Amazer App) Han Seung Yun, the musician recently making waves as the seventeenth artist on the JBTC musical program "Sing Again," will be having his first online concert at the Amazer app series "History Live." The global K-Pop platform Amazer, through its "History Live" series, will be following Han Seung Yun and his journey as an artist in five chapters. Each of these History Live chapters will be filled with performances, fan meeting activities, and even quizzes. Amazer has also announced that Han Seung Yun will be performing previously unreleased songs he composed himself since his "Sing Again" appearance.