Oh man, this has been in the radar for a while. Maybe @⚡ Dee Kay ⚡🇸🇪🇬🇧🇨🇿🇧🇷🇦🇹 wants to take this one.

Do we have a NIP for music and audio? We have NIPs for images and for video (albeit the last one had a compatibility-breaking change).

No idea

I got the "record voice note from microphone" proof of concept ready but it's not a music upload. Should it be enhanced with allowing rocorded audio? I don't think it would be a true voice note so maybe not right for the nip?