Luna Rumba Productions is all about celebrating exquisite sound. On Sunday at the beautiful grounds of Los Arroyos Verdes, Geo Uhrich and his musicians offered us an evening of eclectic music with stirring vocals, fiery violin, rumba-flamenco guitar, electric guitar, mandolin, and exotic percussion instruments. Their award-winning, world-music style enthralled and excited the audience beyond expectations as it was superbly delivered by incredibly…