강남가라오케Del Rosario was himself a pianist and was a member of your newbie jazz team Government Combo Band (composed largely of politicians and popular businessmen). He owned a firm, Trebel Industries, which was the foremost producer of pianos and harpsichords within the Philippines. Del Rosario also invented and patented other audio gear

강남가라오케Del Rosario was himself a pianist and was a member on the novice jazz team Government Combo Band (composed mostly of politicians and notable businessmen). He owned a corporation, Trebel Industries, which was the major manufacturer of pianos and harpsichords from the Philippines. Del Rosario also invented and patented other audio t