The patent holder with the karaoke equipment is Roberto del Rosario, who's with the Philippines. He formulated the karaoke's sing-along process in 1975 and is also recognized as the only real holder of a patent for the karaoke process on earth.[20] Afterwards developments[edit] Extra standard would be to contain the https://xn--939au0g6rj1ue34n9rrf5c.online/