Bay Street Theater's weekend will feature Judy Carmichael's piano virtuosity and a mockumentary film satire set mostly on the East End.

The Duchess Trio will bring their tight vocal harmonies to LTV, while "Scrooge . . . The Relapse" will summon Freud, Marx, and Charles Darwin to reform the miser.

The Hampton Theatre Company will celebrate the season with three performances of "A Christmas Carol: A Live Radio Play."

The Sag Harbor Church will host a community holiday party and a screening and talk by Nick Whelan, an experimental filmmaker.