"ココロ"
English: Heart
Uploaded March 2, 2008, with 2,000,000+ views
Produced by Toraboruta-P
The song tells a story about a robot (Rin) made by a lonely scientist, but is missing a program unable to be made: a Heart. Some time after her creation, her scientist passes away, leaving her alone for several hundred years. She begins to wonder about her creation and makes a wish. She accesses the files that her creator had left and finally gains a Heart. In the process, she discovers what it's like to be happy and sad. With her new feelings, she gratefully dedicates all of the songs that she sings to her creator. In the end, the miracle robot had a short in her system and could no longer sing. However, she had a smile on her face in her last moments, resembling an angel.
Many PVs present Rin's scientist being Kagamine Len.
This song is featured in the EXIT TUNES compilation album Vocalostar.
(Taken from Vocaloid Wiki)
If you want to listen to it, here's the download link.
Mediafire
