Featuring Arwen Lawrence’s ravishing voice and guitarist Jorge Liceaga supple accompaniment, Cascada de Flores bring intoxicating energy to the Latin American songbook. But with their new show “Radio Flor,” the ensemble has created a delightful frame for their repertoire of emotionally wrought boleros, rhythmically insistent sones, bamcucos, guarachas, and even a soaring Rodgers and Hart gem. Designed like a vintage radio broadcast, the production includes station identifications, hilarious mock commercials, and a brief radio drama starring Liceaga as El Dandy. Playful, witty and artfully staged, the show is as charming as the music is breathtaking. Lawrence and Liceaga have once again earned their bouquets.