Hatsune Miku
Hatsune Miku was the first Vocaloid developed by Crypton Future Media after they handled the release of the Yamaha vocal Meiko and Kaito. The name of "Hatsune Miku" was conceived soon after the Vocaloid 2 announcements, when an English and Japanese vocal were developed for the character. The intended design was delayed and later used for Megurine Luka instead. Miku was intended to be the first of a series of Vocaloids called the ""Character Vocal Series"", which included Kagamine Rin/Len and Megurine Luka. Each had a particular concept and vocal direction.
Hatsune Miku: Project DIVA X
Live Quest Mode involves the player completing quests by playing songs. In between missions, short interactions and visual novel style dialogues may play out between the player and Vocaloids. The mode consists of two main types of quests - Area Quests and Event Quests. Area quests simply require a song to be completed while gaining a certain score. Later quests throw in other challenges (such as the "cool" pop up randomly changing to "miss" and "sad"). Event quests have special requirements such as requiring the player to play a "special live" consisting of 3 songs in a row. The game also features new "medley" songs, which are fully playable compilations of popular returning and new tracks. The full versions of the songs comprising the medleys cannot be played in full.