Persistent earworm alert XCVII

Although I never bought anything from the now defunct National Supermarkets, their radio and TV jingle is embedded deeply into my psyche.  Sometimes, when strolling through a park on a pleasant day, I'll remember jingle singers from 30 years ago belting out, "At National Supermarkets, you're important to us!"  The show biz razzle dazzle in the vocals makes the jingle so memorable, long after the chain's St. Louis closing.