大阪アンダーグラウンド (Osaka Underground)

==Background==
Osaka Underground (大阪アンダーグラウンド) is a mini album from out of survice that was released during the VOC@LOID M@STER 30 event. The album contains 6 tracks featuring IA, Hatsune Miku, and GUMI. Track 6 is an instrumental version of the first track. The front and back of the album cover are reversible.
==Preceding and Succeeding albums==
Planet8 album.jpg|PLANET8
Historyofoos album.png|The History of OOS
==Track listing==
==External links==
===Official===
===Unofficial===
Category:Albums
Category:Albums featuring Hatsune Miku
Category:Albums featuring GUMI
Category:Albums featuring IA
Category:Japanese albums