"Porgy and Bess," George Gershwin's towering American opera about life on Catfish Row, a black tenement in Charleston, S.C., comes to thrilling life in this critically acclaimed production staged by James Robinson, with David Robertson conducting. Eric Owens and Angel Blue take the title roles of Porgy, a crippled beggar, and Bess, the beautiful woman he loves; the enormous cast also includes Frederick Ballentine as the drug dealer Sportin' Life, with other roles filled by Denyce Graves, Golda Schultz, Latonia Moore and Alfred Walker.