The Foo Fighters stripped things down at the Democratic National Convention last night, going acoustic on "My Hero" and "Walk" not long before President Obama accepted his party's nomination for a second term. With the full band taking the unplugged plunge, both tracks sound full and haunting, with "My Hero" especially seething with raw intensity that contrasted with a delicate piano solo. Sure, there was an entire arena for the Foos to rock, but taking a bare approach added an extra emotional element to an already inspiring scene.