Scores.

 Sir had told us to add scores, incidental music, diegetic and non-diegetic sounds, and synchronous and asynchronous sounds. 

I managed to get good scores or "background music" suitable for the opening from the files sir sent us but as for Incidental music, we had to do some searching. 

We spent some time on youtube and other such websites to download satisfactory sounds and ended up downloading some weird compilations of supposedly "horror sounds". They were mostly two to three hours long but we managed to narrow it down to one hour and decided on the most fitting sound effects.