By the way, if you wanna know where the OST comes from, check this(an URL to an excellent website where you can make your own soundtracks) :
https://www.beepbox.co/#8n31s7k0l00e0et1am3a7g0fj07i0r1o3210T5v2L6u21q1d5f6y1z8C...
Very recommended, limited space for your creations but a very intuitive and complete sound/instrument set with a lot of customization (changes saved in URL so if you want to save it, just copy the URL in a .txt doc)