I was told later, and also by lots of singers who were involved in this, that they sometimes recorded 50 or 60 different takes until they got just the right take -- they uploaded it.
たくさんの応募がありました 後で聞いたら 参加した人の多くは 完璧なのが撮れるまで 50回も60回も 撮り直ししていたということです