The description of the special edition on CD Japan:
"This compilation is made to commemorate the the 50th birthday of hide includes his last unreleased song, "Co Gal," which had existed only as a demo audio with roughly recorded vocal. This time, the song is resurrected featuring a vocaloid replicating the voice of hide produced by I.N.A. Also includes 15 leading songs. Features remastering and SHM-CD format. This edition includes a demo version of "Co Gal" and a bonus DVD with music video(s) and rare performance(s). Package featuring color photo of hide. *The DVD disc is encoded for region 2 (Japan, Europe, and Middle East), and no subtitles are included."
Track listing:
1. Co Gal
2. [Bonus Track] Junk Story
3. [Bonus Track] In Motion
4. [Bonus Track] TELL ME (hide with Spread Beaver)
5. [Bonus Track] HURRY GO ROUND
6. [Bonus Track] ever free
7. [Bonus Track] Pink Spider
8. [Bonus Track] ROCKET DIVE
9. [Bonus Track] GOOD BYE
10. [Bonus Track] Hi - Ho
11. [Bonus Track] Beauty & Stupid
12. [Bonus Track] MISERY
13. [Bonus Track] TELL ME
14. [Bonus Track] DICE
15. [Bonus Track] 50% & 50%
16. [Bonus Track] EYES LOVE YOU
17. [Extra Track] Co Gal (demo)
The normal edition doesn't include the original demo version of Co Gal unfortunately.