The patent holder of the karaoke device is Roberto del Rosario, that's in the Philippines. He developed the karaoke's sing-together program in 1975 which is recognized as the only real holder of a patent for the karaoke method on the planet.[20] Afterwards developments[edit] This is the most important Art center https://xn--939au0g6rj1ue34n9rrf5c.online/