Complex sentence: Moreover it claims that G. V. Prakash's music sets the tone for the period pieces; adding that "otherwise, the BGM is adequate" whilst Ramji's cinematography "is brilliant but the movie could use some editing".
Split into simpler sentences: Moreover it claims that G. V. Prakash's music sets the tone for the period pieces; adding that "otherwise, the BGM is adequate". Whilst Ramji's cinematography "is brilliant but the movie could use some editing".