I really love kpop songs that sample (incorporate) classical music in them. Probably cause I did ballet for such a long time. Sometimes they aren't executed super well but there are some serious hits.
Here are my favorites:
Feel My Rhythm-Red Velvet
Love O'clock-WJSN
Hands Up-Cherry Bullet
Jungle Game-SF9
List your's below so I can add it to my playlist lol
-lie by jimin samples la vida breve by manuel de falls.
-fantasy by vixx samples beethoven's moonlight sonata
-gfriend's summer rain samples dichtorliebe, op 48:1
-dreamcatcher's good night samples händel's suite no. 7 in g minor
-everybody's got a $ecret by billlie has dance of the sugar plum fairy in the intro -and freeze by momoland samples entrance of the gladiators by fucik!