SPiCa

SPiCA is a song by Toku-P and sung by Hatsune Miku. The Lyrics were made by Toku-P and Kentax, with Dadiburaotoko on Guitar. It's a song about stars and constellations, on how they watch over us as we watch over them, both loving each other yet trying to evade each others feelings.
 * Nicovideo broadcast
 * YouTube Broadcast

Background
This song is in a mischief of a constellation. It depicts Miku being the Star of the Night sky, forever watching and loving us from above. She also travels as each passing night, forever watching over us, looking over us, she sings her sorrow of saying goodbye as the sun rises as each day lacks a bright star that can't be seen.

The meaning behind the song is debatable, and many interpretations may arise from each action of the song.