conceptual or quirky songs?

please recommend songs that are very concept driven or have a quirky feel, here's some examples

• cowboy and dracula by f(x)
• vivid by heejin
• rokkugo by super junior-t
• why so serious by shinee
• miss agent by nine muses
• sonar (spanish ver.) by nmixx
• parade, stupid cupid and mosquito by red velvet
• funny hunny by orange caramel (most orange caramel songs actually)

and this can be by any korean group/band/solo! tysm in advance!