You know it’s Christmastime when “The Nutcracker” is playing in town. The most famous ballet in the world is a holiday staple. The Louisville Ballet is celebrating its 10-year anniversary of “The Brown-Forman Nutcracker” with an addition, a special “Sensory Friendly” performance on Sunday, Dec. 9 at 11:30 a.m. It will use remastered music that’s safer for people with special needs. Additional events include Sugar Plum Parties, backstage tours and “The Nutcracker” Storytime at the Louisville Free Public Library. Visit louisvilleballet.org for details.