It seems that Amarynn is voicing a singing synthesizer. Check out the tweets here:
https://twitter.com/expressivelabs/status/1772231959424409625https://twitter.com/expressivelabs/status/1772232251050197348The software itself is still in development, and so far there's only confirmation that yes, Amarynn is working on the voicebank(?) and there also a key visual depicting the character design.