User blog comment:Angel Emfrbl/We seriously ignoring Voiceroid???/@comment-26877086-20151215154942/@comment-5051846-20151215171441

It's a singing synthesiser from Plogue that emulates vintage synths, for example the original computer that sung 'Daisy Bell'. They're given anime-eque avatars similar to Vocaloid, and all interact on Twitter like Sonika.