B. Buck followed his deepest instincts.
Provide information or evidence
Answer:
He enjoys music that is more authentic and less mainstream.
Explanation:
Based in the passage, we can assume that Mateo dislikes pop music, so you can also assume that Mateo likes music that is less popular, thus more authentic and less mainstream.
Film soundtracks will speed up, edit, and rearrange music and songs as to fit the scene that the music take place. This way the song isn't too long, and fits the mood.
Hope this helps!