Disk Vol.4 "Open Your Heart"
- 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.
Availability[edit | edit source]
Enemy Drops[edit | edit source]
All music disks can be obtained by killing any enemy.