Simple enough, it changes the music that plays in the Chaos Realm to Heart of Fire.
Heart of Chaos replaces the music that normally plays in the Chaos Realm with Heart of Fire.
Compatible with the AoS Rando! https://discord.gg/VEtVYNr
Patch created by radzo73, feel free to reproduce, as long as you give me credit for what I did.
Database match: Castlevania - Aria of Sorrow (USA)
Database: No-Intro: Game Boy Advance (v. 20180816-092117)
File/ROM SHA-1: ABD71FE01EBB201BCC133074DB1DD8C5253776C7
File/ROM CRC32: 35536183