Breaking his year-and-six months hiatus, soloist Kim Tae Woo is back with a new song called "Echo"! He's finally performed on his comeback stage with "Music Core", and many agree that "Echo" could repeat the success of his 2009 hit, "Love Rain". Co-produced by Lee Hyun Seung and Kim Tae Woo himself, the song aims to express the theme, "True love will return, just like an echo." Despite his 12-year history in the industry, Kim Tae Woo aimed to show fans that he's still learning about life through his passion for music, thus coming up with the perfect title for his second album, "T-School". Check out his comeback stage below!"