39

Background
This song was uploaded in celebration of Miku's 5th birthday. The song is about Miku giving thanks to all her listeners, people who use her, and just any overall fan of Vocaloid in general for sticking with her for this long.

This song was released as a single and is featured on the albums MIKU-MIXTURE, Hatsune Miku 5th Anniversary Best ～memories～, Hatsune Miku 5th Anniversary Best ～impacts～, and Hatsune Miku "Magical Mirai 2014" Official Album.

Concerts
This song was featured in the following concerts.


 * Natsu no Owari no 39 Matsuri
 * Hatsune Miku Magical Mirai 2013
 * Matsuri Da Diva
 * Hatsune Miku Magical Mirai 2014

Advertising
"39" was featured in a FamilyMart commercial in 2012.

Trivia

 * "39" is a number often recurring in the VOCALOID franchise because it can also be read as "Miku".