The patent holder with the karaoke machine is Roberto del Rosario, who is from the Philippines. He made the karaoke's sing-together program in 1975 which is identified as the only real holder of a patent for just a karaoke method in the world.[twenty] Afterwards developments[edit] Perched up to the 4th https://xn--939au0g6rj1ue34n9rrf5c.online/