The patent holder of your karaoke machine is Roberto del Rosario, that is from the Philippines. He developed the karaoke's sing-along procedure in 1975 and is also recognized as the only holder of the patent for just a karaoke method in the world.[twenty] Afterwards developments[edit] Online video-empower your rooms at https://xn--939au0g6rj1ue34n9rrf5c.online/