South Korean folk rock singer Kim Kwang-seok has been dead for nearly 25 years, but his fans will be able to hear him perform a new song cover on Friday thanks to artificial intelligence (AI) technology used to recreate his voice. The voice AI system - Singing Voice Synthesis (SVS) - learned 20 songs of Kim based on training tool with over 700 Korean songs to improve accuracy, so that the system can mimic a new song in Kim’s own style, according to the AI company Supertone which recreated the dead singer’s voice.