??? ??? ??? ?????. ?? ??????? ??? ??? ??? ??? ??? ??? ??? ?? Instrumental minus-one particular backing tracks from "flip sides" of commercially introduced 7-inch vinyl records[fifty five] came into practice in the course of the late eighties by the Philippine recording marketplace. The prevalence of B-aspect backing tracks was more commercialised

??? ??? ??? ?????. ?? ??????? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?? ???? ???? ??? ??? ??? ???? ????? ??? ?????. ?? ??? ?????? ?? ??? ?? ??? ?? ?????? ?? / ?? ????? ?? ?? ??/??/?? ??? ??? ? ?? ??? ??? ?? ?? ?? ?? ? ?? ?? ? ??? ?? ?? ??? ??? ??? ?????. ?? ??????? ??? ??? ??? ??? ??? ??? ??? ?? ?? ??? ?? ?? ??? ?? ??? ?? ? ?? ???? ????? ?? ?? ?