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#1 add "feat. 初音ミク" "feat. Hatsune Miku" to either artist or title
pretty explanatory
#2 remove source entirely, source is meant for videogames/shows, so add "プロジェクトセカイ カラフルステージ！ feat. 初音ミク" to source instead
#3 add these tags "Project Sekai Colorful Stage Proseka Female Vocal Japanese Pop Jpop J-pop Iki Ga Tsumaru No Breath"
#4 remove "hatsune miku" from tags since #1