| Catalog No. | DCCD-01 |
| Title | concurrency EP |
| Genre | Techno/Electronica |
| Tracks | 5 |
| Playtime | 30:35 |
| Release | 2008/05/11 M3 2008 Spring |
| Media | CD-R |
| Price | 300JPY / 420JPY |
| Shop |
01. Czk - perfect truth (5:51)
02. gray - precipitation (4:35)
03. Czk - hyprocrisy (5:31)
04. gray - bad end (8:50)
05. Czk - guilty girl (5:56)
(C) 2008-2009 Disorder Circulation/Czk/gray all right reserved.