The line-up is made up of four Main Stage productions and an equal number of shows at the small Unicorn Theatre. The Main Stage season gets underway June 21-July 9 with the popular Sondheim revue Side by Side by Sondheim. Gary M. English directs the piece, which coincides with the 75th birth year of the composer.

Next up is Shaffer's psychological drama about a boy's unnatural attachment to horses, Equus, playing July 12-23. Scott Schwartz, the director of Bat Boy and Golda's Balcony, who has made the BTF his summer home in recent years, returns to helm the play. Schwartz's 2002 BTF production of Larry Shue's The Foreigner was popular there. He later staged the play Off Broadway for Roundabout Theatre Company, earlier this season.

The Main Stage season is completed by David Mamet's failed-heist classic American Buffalo (July 26-Aug. 13), and Souvenir, the two hander about famed coloratura Florence Foster Jenkins which recently played an extended run at the York Theatre Company. Judy Kaye will recreate her Off-Broadway performance. Vivian Matalon will direct the Aug. 17-Sept. 3 run.

The Unicorn Theatre season is launched May 26 with Tom Jones and Harvey Schmidt's marital musical, I Do! I Do!. Directed by Sarah Gurfield, it runs until June 25. Strindberg's classic tragedy of familial and sexual paranoia, The Father, plays June 29-July 16, with direction by Anders Cato, who staged Miss Julie in 2002. Ron Hutchinson's Rat in the Skull, about an IRA terrorist and his interrogator follows July 20-Aug. 6, and French Contemporary Theatre, an evening of French and American contemporary stage work, running Aug. 10-31.

BTF is located in Stockbridge, MA. For information, call (413) 298-5536.