Macne Nana of the Macne series later would become both a UTAU voice and a Vocaloid voice.
Wat from Crypton Future Media also spoke to someone very familiar with UTAU and said that the conversation was 'very interesting'. For example, Megurine Luka V4x was influenced by the UTAU vocal 'Gahata Meiji'. Later, the UTAU software would have its own impact on Vocaloid and other vocal synthesizers, with a number of vocals either referencing UTAU or being produced for the engine to begin with. These voicebanks are normally distributed directly from their creators via internet download. A myriad number of voicebanks have been developed by independent users.
They are also called 'voicebanks' (more common in English-speaking areas) and '(voice) libraries' in Japan. Voices made for the UTAU program are officially called 'UTAU' as well, though they are colloquially known as 'UTAUloids', a reference to VOCALOID.
It comes with AQUEST's voice synthesizer 'AquesTalk' for synthesizing the voice samples of the default voicebank, Utane Uta (also nicknamed Defoko) on UTAU's initial launch, after which the generator deletes itself. UTAU has the ability to use WAV files provided by the user, so that a singing voice can be synthesized by introducing song lyrics and melody. UTAU was originally created to assist this process using concatenative synthesis. UTAU, meaning 'to sing' in Japanese, has its origin in the activity of 'Jinriki Bōkaroido' ( 人力ボーカロイド, Manual Vocaloid), where people edit an existing vocal track, extract phonemes, adjust pitch, and reassemble them to create a Vocaloid-esque singing voice. In March 2008, Ameya/Ayame released UTAU, a free, advanced support tool shareware software that was made free-to-download from its main website.