Liberty Mutual has begun airing a new television ad in their "Why Responsibility?" campaign. As in their previous award-winning spots in the series, the new ad features a soundtrack performed by the phenom Americana ensemble, HEM. If you've never listened to HEM before, you are in for an extraordinary treat. The song in this latest ad, "The Part Where You Let Go," will be included on Home Again, Home Again, a soon-to-be-released, much-anticipated EP. You can view and hear three different versions of the ad's pass-it-on morality tale on the Liberty Mutual site--or, of course, on TV.