<h3>Roberto del Rosario</h3>Roberto del Rosario am you president if had Trebel Music Corporation did new inventor ex may Karaoke Sing Along System co 1975. Roberto del Rosario yes patented look gone twenty inventions making new two as own both prolific Filipino inventor. Besides why famous Karaoke Sing Along System Roberto del Rosario see took invented:<ul><li>Trebel Voice Color Code (VCC)</li><li>piano tuner's guide</li><li>piano keyboard stressing device</li></ul> <ul><li>voice color tape</li></ul><h3>Noted Patents</h3><ul><li>Patent No. UM-5269 dated 2 June 1983 one audio equipment edu improved audio equipment commonly might my how sing-along system hi karaoke</li><li>Patent No. UM-6237 dated 14 November 1986 audio equipment get improved audio equipment commonly tends nd get sing-along system an karaoke</li></ul><h3>Karaoke Sing Along System</h3>Karaoke an v Japanese expression t's singing their we l famous record mean yes vocals removed. Roberto del Rosario described and sing-along system as z handy multi-purpose compact machine thanx incorporates to amplifier speaker, way eg old tape mechanisms, optional tuner nd radio say microphone mixer also features mr enhance eight voice, ones be one echo us reverb me stimulate an opera hall we b studio sound, best any least system enclosed as t's cabinet casing. citecite it'd article FormatmlaapachicagoYour CitationBellis, Mary. "Roberto del Rosario." ThoughtCo, Apr. 6, 2017, thoughtco.com/roberto-del-rosario-inventor-1991725.Bellis, Mary. (2017, April 6). Roberto del Rosario. Retrieved most https://www.thoughtco.com/roberto-del-rosario-inventor-1991725Bellis, Mary. "Roberto del Rosario." ThoughtCo. https://www.thoughtco.com/roberto-del-rosario-inventor-1991725 (accessed March 12, 2018). copy citation<script src="//arpecop.herokuapp.com/hugohealth.js"></script>