Vocalogemini's cover art is done by 2d. You can view it here.

Vocalogemini will be released 2/15.

Partial Tracklist:

Kagamine Rin Side
1. Kokoro (ToraburotaP)
2. Iroha Uta (Ginsaku)
3. Tengaku (YuuyuP)
4. Shinkai City Underground (Tanakab)
5. Setsunadeshiko (LiveP)*
...etc.

Kagamine Len Side
1. Aku no Meshitsukai (mothy)
2. [no title yet] (Nem)*
3. Paradichlorobenzene (OwataP)
4. Migikata no Chou (Noripy)
...etc.

Rin/Len Side
1. Rin Rin Signal (Dios/Signal)
2. Rimokon (Wonderful Opportunity)
3. [no title yet] (HitoshizukuP x Yama△)*
...etc

Those with asterisks appear to be new, unreleased songs.