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

Octopath Traveler: Champions of the Continent OST

OCTOPATH TRAVELER  Champions Of The Continent –Main Theme–

Herminia, The Covetous Witch

Tytos, The Hero

Auguste, The Playwright

Guided Travelers

OCTOPATH TRAVELER II Original Soundtrack

Main Theme (Night)

Xenoblade Chronicles 3 Original Soundtrack

Blade - Those Who Know Fear

Odysseus and Penelope finally reunite, Odysseus questions whether Penelope could still love him after what he has done and what he has become.

Would You Fall In Love With Me Again

Stella(星光)

Critical Clash III

OCTOPATH TRAVELER Original Soundtrack

1. OCTOPATH TRAVELER –Main Theme–

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

Critical Clash III

Michael Danielson