I like the use of append here. According to the author whoo, this song is apart of the album "世界のはじまり" (beginning of the world).
Album introduction: http://www.nicovideo.jp/watch/sm14622622
music by whoo mylist/15422895 http://whoosrockq.web.fc2.com/
illustration by 大槻香奈 http://ohtsuki.rillfu.com/
encode by タスク (南方研究所) mylist/13600309
mp3: http://nicosound.anyap.info/sound/sm14649944
Nico source: http://www.nicovideo.jp/watch/sm14649944
Home » プレイリスト » Youtube » 【初音ミクAppend SWEET】 Beginning of the world 世界のはじまり 【オリジナル曲】