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Elena : added
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Mokona :
didn't add "Powered by" because it is unclear what that is. Maybe it is a producer role, or maybe an artist role. Re-post it if you find out more info.
"Party voice": just use voice.
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ladatree : added, for "Worldwide Recorded by", just used "Recorded by"
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doppel9014 : added, I didn't add "和弦" because we don't have any role for musical chords. I am not sure what they mean by this credit.