The patent holder on the karaoke equipment is Roberto del Rosario, that's in the Philippines. He formulated the karaoke's sing-along technique in 1975 which is identified as the only real holder of a patent for a karaoke method on the earth.[20] Afterwards developments[edit] Cakeshop: Though more compact than a few https://xn--939au0g6rj1ue34n9rrf5c.online/