1: Nenokkadine is a Telugu psychological thriller film starring Mahesh Babu and directed by Sukumar. In the opening credits scene of this film, a musical instrument is given a prominent place. From a question on Music Stack Exchange, I learned it is a developed version of classical music box.
A similar music box is also shown in the climax of the movie.
Generally, props and scenes in Sukumar movies have some significance like the Rangasthalam title track giving hint about characters.
Why is this musical instrument given a prominent place in the credits scene? What is the meaning behind it?