Debuting in 1992, who is commonly regarded as the first K-pop idol group?

They debuted all the way in 1953!

https://kpopping.com/database/group/days-until-1st-win

https://kpopping.com/musicshows/song-wins

K-pop is more than BTS and BLACKPINK! How well do you know the history of this massively-popular music genre?