Kasane Teto was created as a virtual singer voicebank for UTAU. Recently, she has been brought to SynthV. It's still all I ever do.
Adachi Rei was created as a virtual singer voicebank for UTAU. Her voice was synthesized using Audacity. Still all I ever do, for what I can tell.
Hitsune Kumi was created as a virtual singer voicebank for UTAU. Please pick up. Please pick up. Please pick up. Please pick up. Please pick up. Please pick up. Please pick up. Please Pick Up. Please Pick Up. Please Pick Up. Please Pick Up. Please Pick Up. Its all I ever do.