Katy Perry fires a "Bullet" straight at country music.
Dierks Bentley leads country's new call for unity.
Trace Adkins salutes the outdoors with NRA Country.
Eli Young Band plant their flag in Nashville with "Crazy Girl."
Norah Jones' love of country goes way beyond Willie Nelson.
Peter Frampton reunites with his favorite guitar -- 32 years after he lost it.