Harry Groener, Niki Scalera, Dan Callaway and Matt McGrath.

Putting It Together, the opening production of the theater season at South Coast Repertory Theater in Costa Mesa, is, for the most part, a charming evening of mood-lifting theater. Based on the music of Stephen Sondheim, this show is a compilation of songs from some of his best works including: The Frogs, Company, Forum, Sunday in the Park with George and A Little Night Music. Sondheim addicts–and you know who you are!–will love this show.

Tom Buderwitz’ elegant sets prepare the audience for the evening’s adventure, presenting a sophisticated ode to the elegant apartments of Manhattan, complete with a panoramic view of the New York skyline. Unfortunately, the first act cannot deliver the promise made by Mr. Buderwitz’ impressive and witty designs.

The challenge in any musical is to weave the narrative and music so seamlessly together that the songs and dialogue flow effortlessly from one to the other. In this case, the format of the play leaves holes in the plot that make it difficult for the audience to connect fully with the characters and the story. The songs are linked loosely together by the interaction of a couple, played by Harry Groener and Mary Gordon Murray who, with the help of their caterer (Niki Scalera), entertain two guests played by Dan Calloway and Matt McGarth. The bitterness of the couple’s relationship weighs heavily in the first act. It is difficult to empathize with characters who bicker continually about their everyday trials and tribulations, expressed through songs.

The caterer and the guests add a lighter note to the party, however, and the second act brings a better understanding of the characters and moments of comedy that lift and energize the play.

Sondheim’s music, with its intricate lyrics and complex vocal patterns, can present a challenge to singers who are less than skilled. All of the performers in Putting It Together, however, are to be commended, talented as they are and more than adept at bringing Sondheim’s beautiful and often haunting music to life. In particular, Ms. Scalera’s voice is resonant and powerful. Two of the evening’s most memorable performances–Mr. Groener’s “Sorry-Grateful” and the ensemble’s “Being Alive” from Company–go a long way in making up for the other weaknesses in the production.