Some people say music soothes the souls. However, could it have an effect on small-scale fights? The scenario I'm wondering about is quite similar to Starlord from Guardians of the Galaxy: A human is lifted out of their trusted world, into another world. they carry with them a small library of digitized music from their era, which is unknown to the people in the new world. The difference with the Starlord scenario is that this human has a portable AI companion that can remix that music on the fly if needed. The human has experience in several martial arts and an excellent sense of rhythm.
Could this human use their library of music, combined with their AI companion and maybe new music from the era they ended up in, to gain an edge over similarly experienced enemies without the music? I'm talking about using the music itself, not the sound of music: the human is affected by extremely loud or annoying sounds just as much as their opponents.
I have seen Playing music during battle?, and the difference between these questions is that my question is more focused on small-scale battles involving melee combat, not large-scale warfare where the sound of war would just drown out the music. The intent of this question is: 2 small sides (1-5 people on each side), 1 song that both sides can hear. Can one side gain an advantage over the other side by playing the correct music, either through augmenting their own fighting or detracting from that of their opponent?