Roberto del Rosario

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Roberto del Rosario
OrganizationTrebel Music Corporation
Known forPatentholder for the karaoke machine
Notable work
Sing Along System (SAS)
Spouse(s)Eloisa Beltran

Roberto L. del Rosario is a Filipino entrepreneur who served as the president of the Trebel Music Corporation. He is also the patent holder of the Sing Along System, a karaoke system he developed in 1975.

Patent rights to Karaoke[edit]

Del Rosario holds a patent to the Sing Along System, a karaoke machine which he developed in 1975.[1] He filed a patent infringement case against a Chinese company before the Supreme Court. The court ruled that the company violated his patent rights over his karaoke machine in 1996. He is recognized as the sole holder of a patent for a karaoke system in the world. However most scholars credits Daisuke Inoue, a Japanese, as the inventor of the karaoke. Inoue invented the karaoke in 1971.[2]

Other works[edit]

See also[edit]


  1. ^ Sood, Suemedha (12 August 2011). "Karaoke in the Philippines". BBC Travel. Retrieved 19 February 2018.
  2. ^ Brown, Kevin (12 September 2015). Karaoke Idols: Popular Music and the Performance of Identity (illustrated ed.). Intellect Books. p. 69. ISBN 9781783204441. Retrieved 19 February 2018.

External links[edit]

  • Pascua Quing Ramos Reyes Roque Rosales. ".: PINOY IMBENTOR :". Retrieved 2014-05-31.