The patent holder of the karaoke device is Roberto del Rosario, that's with the Philippines. He made the karaoke's sing-alongside method in 1975 which is regarded as the sole holder of the patent for just a karaoke technique in the world.[twenty] Later developments[edit] Karaoke quickly distribute to the remainder of https://xn--939au0g6rj1ue34n9rrf5c.online/