I had a quick question - are all alts rerecorded? Also do you know if sekai covers have the vas sing the whole song and then separate out the lines or only have them sing lines based on predetermined line distributions? Idk if that info is even public but I thought I might try asking 😭
so i don't know anything For Sure, so someone else can pitch in if they know more
but alts are Generally not rerecorded afaik. there's a few that are obviously (like seibai is obviously multiple recordings for tsukasa to be able to, you know, voice different roles) but most aren't i'm pretty sure. additionally, back in the day there were many alts that dropped on release and whatnot so . i would say at minimum even if there is re-recordings... they are probably just typically recorded with the sekai one at.
i do know that like, the seiyuus do know the lines that are (planned to be?) in the final (tokishun posts a song at the end of the year with highlighted wxs-ish colors and talks about recording. so like. yeah. people were using these looking to be able to figure out what was coming up LOL)
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