5. Jamey Johnson, 'The Guitar Song'
What does Jamey Johnson keep under all of that hair? Songs. Nashville's gruffest and grittiest star turns out to be its most reliable traditionalist, a Music Row pro who can write a song for every emotional season. Johnson pulled out a whole slew of them — 25, clocking in north of 105 minutes — for his double-disc fourth album: acoustic confessions and rugged boogie blues, big weepers and grim reapers, cover tunes and novelty ditties, not to mention "California Riots" and "Playing the Part," a pair of fiercely funny, unrepentantly redneck swipes at the frou-frou blue states.