We’ve all heard about “going green” and getting all eco-friendly but what, exactly, what is a “green concert”?

The question comes up because Sebastopol Savoyards Ltd. is presenting one, the eighth and latest in its Series of Savoy Celebrations, at 7 p.m. Saturday, Jan. 16, at the Sebastopol Center for the Arts, 6780 Depot St.

It turns out this concert is “green” because it’s devoted to music about nature, composed by the kings of comic operetta, W.S. Gilbert and Arthur Sullivan. Better yet, this is a sing-along, so everybody gets in on the act.

To quote the concert’s organizers directly:

“The the evening will feature songs exploring the flora, fauna and facets of nature’s bounty as given us by Messrs. Gilbert and Sullivan.  You’ll become characters from operas less familiar (‘The Sorcerer,’ ‘Princess Ida,’ ‘Ruddygore’), but which contain no less sprightliness, beauty and charm. Words and music for these numbers will be provided. You’ll meet ‘Cox & Box’ and spend time at ‘The Zoo’ (Sullivan without Gilbert), and read one of the ‘Bab’ Ballads (Gilbert without Sullivan).  Of course, favorites from past years will be yours to sing.”

Pianist Chris Alexander will provide accompaniment. Seating is limited. Admission $10. Information: 829-4797, sebarts.org.