The Mettawee River Theatre Company performs Bertolt Brecht's classic parable about a mother's love, The Caucasian Chalk Circle. . . .Singer and composer Angel Luis ‘King of Plena’ Torruellas joins Zon del Barrio to blend Puerto Rican tradition with urban hip-hop. . . . Ewen McGregor provides the voice for Rodney Copperbottom, a genius inventor in Robots, screening at Pier A Park . . . . Celebrando MexicoNOW a Mexican festival featuring contemporary and traditional music and dance, takes place at Lincoln Center. . . .Tom Stinson Jazz Group give its last of four performances at Chelsea Piers this summer. . . . Roots of American Music festival takes place in Lincoln Center. . . . .More. . .