Instrumental covers played on store PAs are awful. Then again, sometimes real songs aren't so great. At the very least, the choices are often quite odd. I nearly fell over when I heard Pink Floyd's "San Tropez" in a store. I love the band and all, but that's far from being one of there best or most note-worthy.
Muzak to our ears
Forget about those bland cover tunes, there's a hip new indie sound in retailing
"There was once a time when muzak was appreciated. It soothed people's nerves when they were too scared to ride a new invention called the elevator."