The patent holder from the karaoke device is Roberto del Rosario, who is from your Philippines. He created the karaoke's sing-alongside method in 1975 and is particularly identified as the only real holder of the patent for any karaoke procedure on the globe.[twenty] Afterwards developments[edit] Boombar is yet another a https://xn--939au0g6rj1ue34n9rrf5c.online/