Vocaloid 2 Series 2 Kagamine Rin and Len set.
I know this because I have Vocaloid 2 Series 1 - Hatsune Miku, which is a lot more popular and common in the Vocaloid community. I just need someone to write lyrics and compose midis and I can start working with mine.
I'm gonna go pick up Kagamine Rin and Len later, and I heard there's supposed to be another set marked to come out soon (though I think it might be reserved for a Vocaloid 3 release).
If anyone wants to help out, we could probably do some colab works, we just need the following:
-Midi composer
-Lyrics writer (preferably in japanese, finding english libraries for the Japanese Vocaloid 2 release is not easy).
-Editor
-Artists
Also, if anyone wants to play around with the Miku Miku Dance program and use it to help with the work, just ask and I'll upload it or find the link to where the program is already at.