All battle, battle adjacent, and battle intro themes from Octopath Traveler, Octopath Traveler II, and Octopath CotC.
This is currently a complete playlist at 90 songs.

All Octopath Traveler Battle Themes

Game Music

𝖀𝖓𝖉𝖊𝖗𝖙𝖆𝖑𝖊- 𝕱𝖆𝖑𝖑𝖊𝖓 𝕯𝖔𝖜𝖓 (𝖘𝖑𝖔𝖜𝖊𝖉 & 𝖒𝖚𝖋𝖋𝖑𝖊𝖉)

Octopath Traveler: COTC | Master of Fame

Xenoblade Chronicles Music - You Will Know Our Names

Xenoblade Chronicles - Gaur Plains

OCTOPATH TRAVELER Original Soundtrack

16. Octopath Traveler OST - The Cliftlands

1. Octopath Traveler OST - Flamesgrace, Guiding Light

8. Octopath Traveler OST - Tension

11. Octopath Traveler OST - Battle I

24. Octopath Traveler OST - Decisive Battle I

1. Octopath Traveler OST - Battle II

1. Octopath Traveler OST - Battle III

Octopath Traveler: COTC | Master of Fame

Reservoir