While I do commend the remix of the battle music for Final Fantasy I is great, it felt out of place with this battle. After all, it is Chaos that is being fought, not a random encounter or a different boss. I was expecting the Final Boss music to be played, or at the very least one of the boss battle themes. Why was the normal battle encounter chosen?

Personally, I play either the Final Boss theme (PSX version) or an Orchestral Remix of a boss battle theme that I found that sets a better mood for fighting Chaos.
Final Fantasy I - Boss Battle A (Orchestral Remix): https://www.youtube.com/watch?v=eEpNE3g7Tqk