KAITO's initial failure was one of the main reasons why other male VOCALOIDs were not developed for a long time after his release. However, KAITO managed to sell only 500 units-deeming him "a commercial failure." In contrast, his counterpart, MEIKO, had sold 3,000 units in her first year.
Also in 2003, Yamaha gave out KAITO's first demo song, "Kimi no Uwasa (Rumor of Yours)" 3 years before his release.Īt the time of his original sale, VOCALOID was not yet a well known product, and synthesizing software was only considered successful if it sold more than 1,000 units. MEIKO was released 1 year after its release, and KAITO followed her nearly 2 years later. It was the duet song "Ano Subarashii Ai wo Mou Ichido (That Wonderful Love Once More)" and it was covered by prototype version of MEIKO and KAITO before their release. On 24 July 2003, a CD album "HISTORY OF LOGIC SYSTEM", which included a song using Japanese VOCALOIDs commercially for the first time, was released. MEIKO and KAITO were originally developed alongside LEON and LOLA and intended for release for the software "Project Daisy", with KAITO having the name of "TARO" for a long time.
This was much in as the later VY1 and VY2 vocals were left to Bplats, Inc. MEIKO and KAITO were originally developed by YAMAHA, with Crypton Future Media handling their commercial releases.