Roberto del Rosario

Roberto Legaspi del Rosario (June 7, 1919 – July 30, 2003) was a Filipino entrepreneur; best known as the patentholder of the Sing-Along System, a type of karaoke appliance he developed in 1975. From his entrepreneurial initiative to patent a karaoke system first, he frequently, albeit arguably, became referred to as "the inventor of Karaoke".

Del Rosario held the patent to the Sing-along System, a type of karaoke he developed in 1975, and was consequently recognized as the sole patent holder of the karaoke system worldwide.^[1] He filed a patent infringement case against a Chinese company before the Philippine Supreme Court ^{[citation needed]}. In 1996, the court ruled that the Chinese company violated his patent rights. ^{[citation needed]} Despite this, a book entitled Karaoke Idols: Popular Music and the Performance of Identity^[2] credits Daisuke Inoue, a Japanese man, as having invented karaoke earlier in 1971.

• Daisuke Inoue
• Karaoke

• Biography of Roberto del Rosario
• Karaoke History
• Asia's Obsession with Karaoke