Complex sentence: He left Rodríguez's band to go to Panama with Las Estrellas Negras, comprising mostly ex-Rodríguez musicians and also played a lot with Los Hermanos Castro.
Split into simpler sentences: He left Rodríguez's band to go to Panama with Las Estrellas Negras, comprising mostly ex-Rodríguez musicians. He also played a lot with Los Hermanos Castro.