Most likely a very endangered format! I'm not sure how many are left myself. Your post got me thinking how the "Classic" FM100 format (WFMF/WLOO days, and other various Muzak varieties of it!) used to be the de facto sound in the grocery store. I'm pretty sure that either Jewel/Osco or Burgers Foods (defunct) in Munster actually played FM 100 outright. Now grocery stores sound like The Bridge (XM), a classic-ish Lite FM sound or the Blend (XM), the Drive, or a mix of all 3!