What I can do instead is offer a on the topic of Tamil lullabies ("Thalattu Padalgal") and the legal/ethical issues around digital music piracy in India. You can use this outline to write your own paper.
YouTube remains a huge resource for music. Many official label pages or music archive channels upload full movie soundtrack playlists. You can listen for free, though a YouTube Premium subscription allows for background listening and ad-free playback.
Search for the Thalattu Padava soundtrack to stream it legally.
Whether you download it from an archive or stream it in high definition, "Thalattu Padava" remains a lullaby not just for the character in the film, but for the nostalgia of every listener who remembers the magic of Dil Se .
The maestro's ability to blend traditional Carnatic influences with Western orchestration creates a timeless sound.