Thanks for the reminder, we will be updating the game entry with more information throughout the day. In terms of the music's source, this was done by one of our team members named Marc Uddo (SpectralAudio on Itch).
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This is you, right? https://www.vientoverse.com/
Because Itch does not have a very good search function, I can't find SpectralAudio, but I'd like to follow them too. Could you post the link here?
Sorry for the delay, SpectralAudio is now a contributor on this game so you should be able to find their page through this submission now. Yeah, that is our website where you can find some information about our team members and some of our game projects (though it needs to be updated on the games front).