みくみくにしてあげる♪ (Miku Miku ni Shite Ageru♪)

Background
This song describes Miku introducing herself to the world. It is a denpa song, and thus the title Miku Miku ni Shite Ageru (I'll make you Miku-Miku-ed) carries no specific meaning in Japanese. Thus, what the title actually meanings is a subject of disagreement among fans. However, the term was derived from ぼこぼこにしてあげる (boko boko ni shite ageru), which means I'll beat you up. One of the prevailing interpretations among the Japanese fandom is I'll make you obsessed with Miku, conveying the idea that Miku strikes fans' hearts with her voice. Similar expressions are みくみくにされる (Miku Miku ni sareru) (I'm Miku-Miku-ed), フルみっくにされる (furu Mikku ni sareru) (I'm Miku-Miku-ed to the full extent) and so on. It is commonly said to newcomers in the Vocaloid fandom as a welcome, or to make them a Vocaloid fan by replacing Miku with another Vocaloid name, implying that they will turn you into an overall Vocaloid fan.

The song topped the first Weekly Vocaloid Ranking on Nico Nico. It was one of three early Miku songs to establish Miku's character as it is known today, along with kz's "Packaged" and "Koisuru VOC@LOID". As of September 2013, "Miku Miku ni Shite Ageru" is officially the most viewed Miku song (original upload) on Nico Nico, with over 10 million views. The next popular original Vocaloid upload is ryo's Melt, with around 9 million views.

Piano sheet music appeared in the ピアノソロ やさしくひける ボーカロイド Selection for Piano collection. This song has also appeared as sheet music in the Vocaloid Best selection series.

This song is featured in the Miku FES'09 Concert, the MikuPa Live in Singapore 2011 Concert, the MikuPa Live in Tokyo 2012 Concert, the MikuPa Live in Hong Kong and Taiwan 2012 Concert and the MikuPa Live in Kansai 2013 Concert; and also in the games -Project DIVA-, -Project DIVA- 2nd, -Project DIVA- Arcade, Miku Flick/02 (DLC) and -Project DIVA- f (AR only).

Animelo ReBridge 2009
Animelo is an Anime-Central concert where songs from various animes are performed in a concert-like fashion. It was here that Miku appeared as a surprise in 2009. Not Only Miku came, but Rin and Len's Voice Provider, Asami Shimoda, sang Kokoro as a teaser for introducing Miku. Black★Rock Shooter followed Miku's appearance, along with its anime trailer.
 * Animelo 2009 NND Live Broadcast Rip(Includes BRS Trailer)
 * Animelo 2009 Clearer Video(Includes Kokoro)

みくみくにしてあげる♪ / Miku Miku ni Shite Ageru♪ Long Version
There's a well-known fanmade long version of みくみくにしてあげる♪ / Miku Miku ni Shite Ageru♪, made by "Hakugin Ion (Ag+)" (白銀いおん (Ag+)) known as KoshouP, based on Ika's original work.