Editing Karaoke (section)

====Roberto del Rosario====
In 1975, the Filipino entrepreneur and piano manufacturer Roberto del Rosario also claimed to have invented the first karaoke-type machine known as the "Sing-Along System" (SAS). The machine included multiple features enclosed in a single portable cabinet casing; including an amplifier, a [[Loudspeaker|speaker]], a double or single tape deck, an optional [[Electronic tuner|tuner]] or radio, and a microphone mixer that enhances the singer's voice using effects like [[Reverb effect|reverb]] and [[Echo#Echo in music|echo]]. The machine used [[Compact Cassette|cassette tapes]] of [[instrumental]] versions of popular songs which would later become more widely known as [[Minus-One recordings|Minus-One]]. The machine did not have video, but it included songbooks with lyrics.<ref name="Zhou"/><ref name="Shahriari"/><ref name="Drew"/><ref name="Lee"/><ref name="Herbert"/>

The SAS was originally developed since the late 1960s as a teaching device for students taking singing lessons at del Rosario's Trebel School of Music.<ref name="Malang"/> It was refashioned for amateur and recreational use from 1975 to 1977. Unlike Inoue's "8 Juke", it was not coin-operated.<ref name="Tongson journal"/><ref name="Malang"/>

Del Rosario was himself a pianist and was a member of the amateur [[jazz]] group [[Raul Manglapus#Early political career|Executive Combo Band]] (composed mainly of politicians and prominent businessmen). He  owned a company, Trebel Industries, that was the leading manufacturer of [[piano]]s and [[harpsichord]]s in the Philippines. Del Rosario also invented and patented other audio equipment before and after the SAS. His other inventions included the 1972 "One-Man Band" (OMB), an acoustic piano that automatically plays a full orchestra accompaniment; the "Piano Tuners' Guide", an electronic push-button device for piano tuning; and "Voice Color Tapes", ready-made multiplex tapes with songs recorded and programmed to match a specific vocal range.<ref name="Malang"/><ref name="ifia">{{cite web |title=World Intellectual Property Day – April 26, 2025 |url=https://ifia.com/world-intellectual-property-day-2025/ |website=International Federation of Inventors' Associations (IFIA) |date=3 March 2025 |access-date=22 March 2025}}</ref>

Unlike Inoue, del Rosario patented the "Sing-Along System" (issued in 1983 and 1986) and is recognized as the sole holder of a patent for a karaoke system in the world after he won a patent infringement case against a Chinese company in the 1990s.<ref name="Zhou"/><ref name="Herbert"/><ref name="Lee"/><ref>{{cite web| url = http://www.bbc.com/travel/story/20110812-travelwise-karaoke-in-the-philippines| title = BBC – Travel – Karaoke in the Philippines| date = 12 August 2011}}</ref> Despite this, he also did not profit significantly from his invention. Like Inoue, his machines were eventually replaced by more advanced commercial versions made by larger corporations that became available by the 1980s.<ref name="Malang"/>

In 1985, Del Rosario was awarded the Gold Medal for Best Inventor by the [[World Intellectual Property Organization]] for the Sing-Along System, among other awards.<ref name="Herbert">{{cite book |last1=Herbert |first1=Marion |title=Multicultural America |date=2013 |publisher=SAGE Publications |isbn=9781452276267 |pages=1286–1287}}</ref><ref name="Malang"/> He was also elected to the executive board of the [[International Federation of Inventors' Associations]] (IFIA). He also lobbied for more government support for inventors in the [[Congress of the Philippines]], leading to the successful passage of Republic Act No. 7459, better known as the Inventor and Inventions Incentives Act of 1992.<ref name="Malang">{{cite book |last1=Malang |first1=Virgilio L. |title=Inventions & Innovations: A Glimpse of the Filipino Legacy |date=1999 |publisher=TAPI Book |isbn=9789718822012 |pages=35–37}}</ref><ref name="ifia"/>