Do the ox and lamb keep time with your little drummer boy or do they trample him in a mosh pit? If what you hear that I hear is ear-splitting, hard-driving thrash music, then the Smith Opera House is the place to go when 40 Oz. Failure, Delusional Spell, and Gym Class Heroes take the stage at 8 p.m. on Saturday, December 22, for a Heavy Metal Xmas Party. Tickets for this all-ages show are $5. Call 781-5483 or toll-free 866-355-5483 for more information about this show or the Smith Opera House.