A typical harmonica practice session in Santa’s Village is a cozy, lively affair held in the Hearthfire Hall or, when the weather is fair, beneath the Great Fir Tree. Elves gather in a semicircle, harmonicas gleaming in mittened hands, some sitting on toadstools or candy-cane stools, others perched on crates or bundled blankets. Penny Tootle often leads, her eyes sparkling as she demonstrates scales or teaches a new tune like “Sugarplum Blues” or “Gingerbread Jig.”