A concert of Christmas music through the centuries by the Plymouth-based Pilgrim Festival Chorus (pictured) this weekend leads off the holiday season of musical performances by a host of local choruses.

“We’ll approach seasonal music in many ways,” William Richter, the Pilgrim Festival Chorus’s director, said of a program called “A Northern European Christmas.”

Conceived as a journey through a rich musical tradition stretching from medieval carols through contemporary compositions, the program takes listeners through the entire Christmas season with works for Advent, Christmas Day, and Epiphany.

Included are carols based on folk tunes, Renaissance motets written by German composer Hassler and Dutch composer Sweelinck, works by Bach and Mendelssohn, and a number of 20th-century settings of seasonal texts.

The first concert by Community Voices Too!, (pictured) South Shore Conservatory’s new adult chorus for people with developmental delays, will offer holiday favorites including “Over the River” and “Feliz Navidad."

The concert is on Wednesday, Dec. 5 at 7:30 p.m. at the music school’s campus in Hingham.

It’s the debut concert for the Community Voices Too! chorus formed by Eve Montague, director of the South Shore Conservatory’s music therapy department. A similar group began a few years ago at the school’s Duxbury campus.

To read about more upcoming holiday concerts in communities south of Boston, click here.