It's time to get down to brass tacks. Tuba, baritone, euphonium and sousaphone players can gather Saturday to perform international Christmas carols at Frederick Towne Mall, 1301 W. Patrick St., Frederick.

Registration is 12:45 p.m.-1:30 p.m., rehearsal is 1:30 p.m.-2:30 p.m., and the concert is at 3. Registration is $5. Call Patty Ensminger at 301-432-7121 or go to tubachristmas.com.