The flash-mob singing of the “Hallelujah” chorus in a mall food court is just the latest viral video to feature the music of George Frideric Handel — specifically, his sacred oratorio “Messiah.” Midcoast singers who have performed “Messiah” in the past and even those who haven’t are invited to join the trend Saturday, Dec. 4 at St. Peter’s Episcopal Church, 22 White St.

The annual Sing-along Messiah is back, after a year off in 2009 as organizer and director Marion P. Gray attended to some health concerns. The octogenarian Gray is back at the baton, however, and is excited about introducing a couple of new elements this year. This is the 18th sing-along in the series Gray introduced after retiring from the Down East Singers, which she founded.

The sing-along has been held on a Monday night until now. This year, in order to accommodate more singers, the Sing-along Messiah will take place on a Saturday afternoon. Those who wish to sing in the choruses are asked to bring their own scores if they can and be at the church at 2 p.m., when Gray will rehearse some of the trickier sections.

The performance itself will begin at 3 p.m. and will feature soloists Stephanie Lawler, soprano; Juni Shepardson, mezzo-soprano; Scott Dyer, tenor; and Jim O’Brien, bass-baritone. Robert Earle, organist at St. Peter’s, will provide accompaniment.

The first new twist is that the sing-along will be filmed by local cable Channel 7 for later broadcast. The second twist is that everyone, including people who have come to listen, will be invited to stand up and sing the “Hallelujah” chorus.

“Who knows, we might put it on YouTube. If you’ve ever wanted to sing it, this is your chance,” said Gray.

A fee of $5 will be requested to help cover expenses. Gray has rented some copies of the score from the Bagaduce Music Lending Library, but bringing one’s own is always encouraged. She hopes to have “Hallelujah” handouts for audience members. Anyone with questions or in need of score — or who has one to lend — is asked to call Gray at 596-9980.

“It is such an exciting experience,” said Gray. “Let’s join many other groups around the country and sing ‘Hallelujah!'”

VillageSoup Art/Entertainment Editor Dagney Ernest can be reached at 207-594-4401 or by e-mail to dernest@villagesoup.com.