The Kimmel Center's seventh annual Tuba Christmas concert will take place at 12:30 p.m. Saturday, featuring a free holiday performance by regional tuba and euphonium players on the Commonwealth Plaza stage. The performance will be led by conductor and coordinator Jay Krush, a founding member of the Chestnut Brass Company and a tubist with the Pennsylvania Ballet Orchestra.

The public can also participate on stage. Bring your instrument for the same-day registration from 9 a.m. to 10 a.m. and rehearsal from 10 a.m. to 11:45 a.m. at the Innovation Studio.

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Seventh annual Tuba Christmas concert, 12:30-1:30 p.m. at the Kimmel Center, 260 S. Broad St. Free (registration fee applies for performers). Information: 215-790-5800 or www.tubachristmas.com.

A winter wonder stage

Families can catch The Snow Queen this weekend through Jan. 4 at the Prince Music Theater. The show tells Hans Christian Andersen's tale of a girl's journey to save a friend captured by a mysterious and wicked Snow Queen.

Presented by the Enchantment Theatre Company, audience members can enjoy music, magic, and special effects as the stage is transformed to replicate a winter wonderland. A question-and-answer session will follow the performance.

The Snow Queen, 2 p.m. and 5 p.m. Saturday and 1 p.m. Sunday and various dates through Jan. 4 at the Prince Music Theater, 1412 Chestnut St. Tickets are $27, $15 for children (discounted group rates available). Information and schedule: 215-569-9700 or www.enchantmenttheatre.org.

Holiday fun

Franklin Square will be illuminated with holiday lights on Saturday for Holiday in the Square. The kid-friendly event will take place from 11 a.m.-2 p.m., during which families can meet and take photos with Mr. and Mrs. Claus and Elfreth the Elf.

Visitors can also enjoy Colonial Carolers and taking rides on the Lightning Bolt Express Train. Regular attractions, including miniature golf, a carousel, and play areas, will remain open until 7 p.m.

Holiday in the Square, 11 a.m.-2 p.m. Saturday at Franklin Square, 6th and Race Sts. Holiday festivities are free (train rides and regular attractions not included). Information: 215-629-4026 or www.historicphiladelphia.org.