Boston’s festive musical tradition returns with TubaChristmas, bringing a corps of over 100 regional players to perform for residents, office workers, shoppers and tourists. Players will wear festive holiday attire and many will have their instruments similarly decked out. Classic, upbeat holiday favorites are played on various instruments in the tuba family, from euphonias to sousaphones. Downtown Crossing Steps (Washington St. @ Franklin St.) from 12 noon to 1:30pm. More Info below.