On a lighter note for Tuesday, Marty Bergen, the bridge world master, appears at the Oceanside Library on Davison Avenue to offer "Bergen's Winning Bridge Secrets" (766-2360).

The singer Terri Kerins performs "From Opera to Broadway" at 2 P.M. at the Oceanside Library (766-2360), and the Andrea del Danza Espana Company comes to the Port Washington Library at 3 P.M. (883-7927).

On Sunday it will appear at the Oceanside Library at 2 p.m. in "Traveling Around the World With a Song: A New Year's Celebration."

The beat continues Wednesday when the Oceanside Library on Davison Avenue shows "Dance Black America" at 1 P.M. (766-2360).

Courtesy of the International Entertainers, the session is at 2 P.M. at the Oceanside Library on Davison Avenue.

Her mother is a reference librarian at the Oceanside Library on Long Island.

WEDNESDAY As part of its extensive "Family Fare" programming marking National Library Week, the Oceanside Library on Davison Avenue will be host to "An Evening of Folk Music" by Dave Sear.

Her mother is a media specialist at the Oceanside (L.I.) Library.

Oceanside Library, 30 Davison Avenue.

The program will be repeated next Sunday at 2 p.m. at the Oceanside Library.