Disk Vol.4 "Open Your Heart"
From Ephinea PSO Wiki
- Mysterious music disk.
12 different types are known to exist.
Disk Vol.4 "Open Your Heart" is a playable music disk. It plays the song "Open Your Heart", the main theme song of Sonic Adventure for the Sega Dreamcast, Nintendo Gamecube (as Sonic Adventure DX), PC, Xbox 360 and PlayStation 3.
All music disks can be obtained by killing any enemy.