HELPING THE OTHERS REALIZE THE ADVANTAGES OF KARAOKE

https://www.gangnambam24.com/Del Rosario was himself a pianist and was a member on the novice jazz group Executive Combo Band (composed mainly of politicians and popular businessmen). He owned a firm, Trebel Industries, that was the main maker of pianos and harpsichords inside the Philippines. Del Rosario also invented and patented other audio equi