The Abduction from the Seraglio is early Mozart at its best. It's got a whole set of funny, likeable characters, from a sublime but fatuous talking pasha to a ridiculous, ferociously villainous guard who gives up his schemes with a malediction worthy of Malvolio or President Nixon. And it's got some remarkable music, from its opening serenade--Mozart had just got married when he wrote the opera, its heroine is named after his wife--to a sextet (I think) at the end that's so reconciling and beautiful and so on it makes everything Mozart wrote later on seem stale and cynical. For the moment. This production has several Harvard people singing in it, and a new translation besides. (See review on page 2.) Tonight and Saturday, March 2, the Peabody School on Linnaean St.

Dark of the Moon is by two nice gentlemen named Howard Richardson and William Berney. It takes place in the Great Smoky Mountains of Tennessee. Its story concerns a witch boy who turns human to marry a girl named Barbara Allen. At the end, as the McGraw Encyclopedia of World Drama eloquently puts it, "once again a witch, John looks without recognition at the body of the girl he once loved." Well, the course of true love never did run smooth. This weekend and next in the Leverett Old Library, 8 p.m.

Harlem in the Evening is Gene Bone's adaptation of stuff by Langston Hughes, whose poems cry to be read aloud and ought to make for great theater. This weekend and next at the Loeb, 8 p.m.

Grandfather's Imposition is an original, by Ron Bitto '74. This weekend at the Loeb Ex, 7:30 p.m.

Hardesty Park. This weekend and next at Adams House, 8:30 p.m.

Keep Your Pantheon is the heartwarming tale of a peasant village in Greece. The villagers band together to protect their time-hallowed gods from the murderous touch of the international communist conspiracy. Opens tonight at the club.