also Kasane Teto's Synthesizer V voice bank is so wild. on one hand it's very impressive and still distinctly Teto, on the other hand it's much harder to recognize it as a vocal synth and I miss all of the artifacts of its medium. I do really like the duets I've seen where both UTAU and SynthV are used though. I think it's fine if they continue to exist side-by-side rather than one superseding the other. embracing the entire history of a voice is how I like to go about it.
