I first noticed this re-mixing at Home Depot...the pop and light rock pablum that's played during store hours. I've since heard it at other retailers, too. It's not the typical "elevator music" (101 Strings play The Beatles) that's been re-recorded by an orchestra, but the original songs by the original groups. And it's not on every recording...just the ones with a bass line that contributes substantially to the appreciation of the song.

At least, that's what I THINK I'm hearing.