Complex sentence: Their popularity was such, that they even starred in their own feature film called "Una Aventura Llamada Menudo", starring Gladys Rodríguez as "Señora Mía"; it included songs such as "Clara" and "A Volar".
Split into simpler sentences: Their popularity was such, that they even starred in their own feature film called "Una Aventura Llamada Menudo". The film starred Gladys Rodríguez as "Señora Mía", and included songs like "Clara" and "A Volar".