I notice you’re asking for a full paper on — but this phrase is ambiguous. Let me clarify a few possibilities before proceeding:
The film earned a worldwide gross of approximately ₹42.70 crore, as reported by Sacnilk . index of katti batti
The film uses songs to shift emotional registers; the last song is unusually diegetic (sung by dying Payal), breaking Bollywood convention. I notice you’re asking for a full paper