Usage for Music of Kaito

Until Gackpoid was released, Kaito and Leon were the only male voice banks and although Len was released his voice did not hit the same notes that they did. Since overall there are far less male vocaloids and he is the only Crypton male vocaloid that can reach his notes.
Kaito's vocal engine has been updated several times.He can utilize two kind of Vocaloid editors,VOCALOID 1.0 and VOCALOID 1.1, and they have different functions and features. There are many differences between ver1.0 and 1.1, and they sound differently even if they are edited in the same way. (Comparison of ver 1.0 and ver 1.1 without further editing Nico broadcast, Nicozon broadcast). The main differences are Singing Style and Portamento Timing.

To use his 1.0 version, users who are NOT using 1.1.2 version need to patch Vocaloid Ver1.1.2 update file for Kaito distributed on Crypton’s official page first before they use VOCALOID 1.0 editor. Without patching, an critical error will occur. 

He is fit to sing anything from hymns and children's songs to R & B and pop, though the style that he is best used for is singing pop ballads.