Looking to shake up a top-selling but increasingly stale formula, Foo Fighters have split their new CD In Your Honor into two discs, one of which contains the band's usual arena-shaking hard rock, and one of which is quieter and mostly acoustic. It's a good idea in theory, but in practice, In Your Honor's acoustic half reveals Dave Grohl's songwriting shortcomings. Without state-of-the-art production and maximum volume, Grohl doesn't have much to offer, especially given his stature and legacy. "Still," the song that opens the collection's soft side, has an appealing surface of Nick Drake/Mark Kozelek somberness, but beneath the clicking percussion and synthesizer backdrop, the ballad features the kind of forced rhymes and simplistic changes that just about any American high-school emo kid could concoct. The disc doesn't get much better over its next nine tracks; aside from the not-so-bad "On The Mend" (one of the most "produced" songs of the second set, tellingly) the back half of In Your Honor is gooey, undercooked, and embarrassingly unpalatable.