Signature Theatre and its artistic director, Eric Schaeffer, have a long history of championing Stephen Sondheim, so it’s only fitting that the season’s climax is a production of the composer’s “Company.” The stars could not be in better alignment. Schaeffer is back at the helm after directing the successful transfer of Sondheim’s “Follies” from the Kennedy Center to Broadway. The cast is drawn from the theater’s favorite regulars, six of them married couples inhabiting the roles of married characters on stage. Bobby, the protagonist, is played by Matthew Scott, whose credits include the Broadway cast album of “Sondheim on Sondheim” and Signature’s presentation of “Side by Side by Sondheim” two seasons ago.

“When Eric asked me last October to play Bobby, I thought it would be a little daunting, but we felt lots of good energy coming back from the audience on opening night,” Scott said. “Eric has had great success mounting Sondheim works. He said that he had done ‘Company’ 20 years ago and wanted to do it ‘right.’ I don’t know what he meant by that, but we knew there was something alive, fun and special from day one. Everyone in the cast knew each other and being in scenes with the couples and watching how they interact was especially helpful to me.