Tilly Mouse lives under an opera house, and she just loves to sing! But whenever anyone sees her, they scream and run away. Tilly wishes she could perform in the big holiday concert at the opera house, even though everybody says that an opera house is no place for a mouse. But when the holidays arrive and the Diva goes missing, it’s up to Tilly to save the day! With arias by Mozart and Puccini, music from Tchaikovsky’s Nutcracker and Handel’s Messiah, and other holiday favorites!