A song used in a behind the scene of a short film movie.
 

Basically the title. I've used all sorts of software tools including, but not limited to, Shazaam, Soundhound, Google, etc. Here is the video

Starts at 4:18 and ends in 4:40. There's a really short part again in 5:20.

I have already tried contacting the makers of the video but as of April 26, 2020, they haven't responded yet since I asked them in December 2019.

Thank you in advance.

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