The tuba, that red-headed stepchild of the brass family, rarely gets a chance to shine. Not only is it relegated to the back of the orchestra, but it’s so big and bulky that you practically have to wear it, and the sound it produces can verge on a honk. But this clunky reputation is somewhat unfair. Tubas are capable of some pretty glorious sounds, as you’ll discover at Charleston TubaChristmas. At these annual concerts, which have taken place all over the world since 1974, brass musicians gather to play holiday carols like “O Come All Ye Faithful,” “Joy to the World,” and “Silent Night.” No matter how many times you’ve heard those tunes, we bet you’ve never heard them played by a whole bunch of tubas. The concert is open to all tuba and euphonium players, amateur and professional, and you can sign up to play at 4 p.m. Rehearsal begins at 4:30 p.m.