 Keeping this in mind, Yamaha started with a total of forty candidates in their teens and twenties, and recorded temporary sound banks for all of them to test the sound quality before deciding on who the final three people would be.For these three, Yamaha made them undergo over a half-year’s worth of "training" in practicing to read the "incantations" from which the phonemes could be extracted.Seto noted that this was because these incantations were very different from what would normally be on a dialogue script, but after training, the vocalists would be able to recite it all.