The patent holder in the karaoke equipment is Roberto del Rosario, that is through the Philippines. He designed the karaoke's sing-alongside method in 1975 and it is identified as the only holder of a patent for the karaoke program on the earth.[20] Later developments[edit] Exactly what is The easiest method https://xn--939au0g6rj1ue34n9rrf5c.online/