The patent holder with the karaoke equipment is Roberto del Rosario, that's with the Philippines. He formulated the karaoke's sing-alongside system in 1975 and is regarded as the only holder of the patent for the karaoke method on the planet.[20] Later on developments[edit] Should you be locating a place to https://xn--939au0g6rj1ue34n9rrf5c.online/