Shaggy. Wooly. Beard-rock. All are the meaningless adjectives overused by critics writing about My Morning Jacket and other "Southern rockers" who sport natural chin mufflers. Must musicians be pigeonholed by their face-scaping? Nay, especially since Kentucky-based MMJ has never been afraid of stretching its sticky fingers into any genre — whether covering the Muppets in earnest, embarking on a psychedelic swamp bender or a choral funk ode to black metal. The band's sixth studio album, Circuital, released late in May, features all shades of Jim James' storied tenor, from soulful wail and ghostly falsetto to the goofily whispered "Shaaa!" which closes the title track. The sold-out Pageant stop is your chance to bear witness to one of the most heroic live shows going — beards and all.