Name of song by Lime and music box fairy?

[Gunblade]

Ummm... yeah, that song title please ^_^
Can't find it but really want to know what it is :)
The episode where only lime can see this fairy but she is in fact some sort of projection from a music box that some kid lost a long time ago.

[raynebc]

"Yume mitsuketa" is the only duet Lime sings in the Saber Marionette J->X series. I haven't seen it myself, but I have the soundtrack :)