The Kimmel Center will host its eighth annual TubaChristmas on Saturday.

From noon to 1 p.m., this free community concert will feature 100 regional tuba, sousaphone and euphonium players performing carols on the Commonwealth Plaza stage. Tinsel, mistletoe and other seasonal ornaments will decorate local musicians' instruments as they play holiday classics such as "Silent Night," "Jingle Bells," and "O Come All Ye Faithful."

TubaChristmas was conceived in 1974 as a tribute to the late tuba player and teacher William J. Bell, who was born on Christmas 1902. Concerts are staged by tubaists worldwide.

TubaChristmas, noon Saturday at Kimmel Center for the Performing Arts Commonwealth Plaza, 300 S. Broad St. Admission: Free. Information: 215-790-5800 or www.kimmelcenter.org/free.

Music for all ages

World Cafe Live presents KidRockers, an all-ages music concert, beginning at 11:30 a.m. Saturday.

Artists will perform original kid-friendly songs for children ages 3-13. Performers include Philly band Drink Up Buttercup. Hosts are comedians Seth Herzog, who has appeared on VH1, and Craig Baldo, who has appeared with Conan O'Brien.

KidRockers shows, featuring artists in indie music and comedy, are designed to bring families together to enjoy new music. Families can also take advantage of a discount on admission.

KidRockers, 11:30 a.m. Saturday at World Cafe Live, 3025 Walnut St. Doors open at 11 a.m. Advance tickets: $15, $13 for children 1-12. Day of show tickets: $18, $16 for children ages 1-12. Free for children ages 1 and younger. Family discount is four tickets for $44, available by phone or in person. Information: 215-222-1400 or www.worldcafelive.com.

Victorian open house

Children and their caregivers are invited to celebrate the season Saturday at a Victorian Holiday Open House at Smith: The Kids' Play Place in the Park.

From 10 a.m. to 1 p.m., this free event for children ages 10 and younger will feature the Philadelphia Zoo on Wheels, characters from Enchantment Theatre Company's production of The Adventures of Harold and the Purple Crayon, magic by the Amazing Taddo, music by Catherine Selin of Makin' Music Rockin' Rhythms, seasonal crafts, and more.

Victorian Holiday Open House, 10 a.m. to 1 p.m. Saturday at Smith: The Kids' Play Place in the Park, 33d and Oxford Streets in East Fairmount Park. Playhouse hours are 10 a.m. to 4 p.m. Tuesdays to Sundays. The playground will reopen for the season on April 3. Children must be accompanied by an adult, age 18 or older. Admission: Free. Information: 215-765-4325 or www.smithkidsplayplace.org.

Contact Monica Peters mpeters@phillynews.com.