This is dedicated to Miku’s birthday.   Thanks 绾绾Akari
Song:歌に形はないけれど Even Though My Song has no Form
(Uta ni Katachi wa Nai Keredo)

Violin：绾绾Akari

From http://www.weibo.com/AkariSSSSS?from=feed&loc=at&nick=%E7%BB%BE%E7%BB%BEAkari&is_all=1