Contains 56 albums from the Miku;Zen blog, uploaded and organized by Ignition-san (this torrent was created with his permission). All the songs are 320kbps mp3s and have been tagged with proper title, artist and composer information.

More info:
http://mikuzen.blogspot.com/2011/01/mikuzen-releases-5-46-yes-you-read-that.html
http://mikuzen.blogspot.com/2011/01/mikuzen-releases-47-55-vocloid-mster-15.html

Full list of albums:
「8-BIT PROPHET」Various
「Aimai Elegy」 DECO27
「Alteration No. 3」noa
「Aurore et Crepuscule」Various
「AVTechNO↑」AVTechNO!
「Black★Rock Shooter Animation Original Soundtrack & Remixes」 - PART 1 - ryo, Various
「Black★Rock Shooter Animation Original Soundtrack & Remixes」 - PART 2 - ryo, Various
「Color Complex」S.C.X, Various
「CYBER COMPLETE ～Nonstop SigMix～」Dios (SignalP)
「D.A. technology」DATEKEN
「Distorted Princess」8#Prince
「DYE-Synthesis」Electrocutica
「EAGER LOVE REVENGE」Various
「Emonloid」emon(Tes.)
「Ese Honmono」kous
「EXIT TUNES PRESENTS Vocalonexus」Various
「EXITS TUNES PRESENTS Vocaloanthems」Various
「Fragments」Dixie Flatline
「Hammer」nagimiso.sys
「HELIOCENTRISM」KEI
「Hello Goodbye」Scop
「HELLOWORLD」YuchaP
「Iiko Waruiko」kous
「in focus -FResora-」kous, BeginnerF
「Innovator-Earth」Various
「Just Be Friends -ILLUSTRATIONS-」Various
「Kocchi Muite Baby Yellow」ryo & kz
「Kotaeawase」40mP
「Life Size Note」40mP
「Light and Shadow」Scop
「LOG」Kobayashi Onyx
「Lovegazer」DECO27
「Magnet -favorites plus-」minato
「No You, No Me」DECO27
「One Hot Minuts」Shomi
「One」GARNiDELiA
「Paralovrell World」DECO27
「Plustellia」Various
「Rainy Story」Scop
「Re MIKUS」Livetune
「Re Package」Livetune
「REFLECTION」Kisk & Baker
「retimer」Various
「Romeo and Cinderella」doriko
「SEVEN GIRLS’ DISCORD」wowaka
「Silent Noise」FatmanP
「SPiCa ReACT」Various
「Supercell tribute -Stowaways-」-Various
「Supercell」Supercell
「The Monochrome Disc」wowaka
「The Purple Jellyfish Comet, to Come」kous
「Trump」YuchaP
「Twilight Holic」millstones
「Whiteout」8#Prince
「world 0123456789」wowaka
「ZANEEDS # 02」ZANEEDS