Sakine Meiko (咲音メイコ; Meiko Sakine) is an officially recognized derivative of Meiko. Her name of Sakine 咲音, literally means "Blooming Sound" and has the same pronunciation as 先音, "Preceding Sound," i.e., she precedes Hatsune Miku. Her family name is sometimes shared among her other fanmade "siblings", such as Meito in particular.
The term "Derivative" is used here to describe a fanmade Vocaloid character that is based on an already existing character.
She was conceived through the efforts of Producers working with Meiko's voice. This was owed largely to the fact that Meiko had become forgotten because of Hatsune Miku's popularity, leaving both her and Kaito behind. Meiko in particular did not have the young sounding voice of the released Vocaloid 2 voicebanks released at the time and therefore was not as appealing as they were to the Vocaloid Otaku based fandom. Meiko Sakine was established by Nanameue-P to push the limits of the Vocaloid software to make Meiko sound younger. Her official setting is "the Meiko who came into the music trend in the age of 16" (i.e., she is not a younger Meiko variation but Meiko when she was young) and Nanameue-P is "the producer who rediscovered Meiko in her youth". She was later made famous by the PV "Honey" featuring her and other derivatives such as Haku Yowane and Neru Akita, as well as the UTAU Teto Kasane alongside official Crypton Vocaloids.
Sakine Meiko is one of the Vocaloid derivatives that became officially recognized by Crypton Future Media, the publisher of the Character Vocal Series for Vocaloid 2. The other derivatives bearing this distinction are Miku Hachune, Neru Akita, Haku Yowane, and Tako Luka.
In Project Diva (PD), Sakine Meiko is an available character in the PSP game, Hatsune Miku ~Project Diva~ and again as a playable character in its sequels. If the player does not choose her for a long time, she will get angry.
This is Sakine Meiko's most popular video. So far, it has more than 380,000 view counts at Nico Nico Douga. And this number is the highest among the Vocaloid covers of "Seikan Hikou". Interestingly, the original Seikan Hikou was sung by the character Ranka Lee who was voiced by Megumi Nakajima, the seiyuu who would eventually voice Gumi.
Honey was created on Meiko's birthday with the intention of promoting the 'unappreciated Vocaloid'. This song is Sakine Meiko's second biggest hit. It got more than 280,000 view counts on Nico Nico Douga.