From Arirang's Pops in Seoul Ep.3549 (171108). I haven't seen this much foreshadowing since Breaking Bad was on TV.

Link: http://www.arirang.com/Player/Vod_Pla...

Song snippets are:

Momoland - Bboom Bboom (note: I edited in snippets of Bboom Bboom which wasn't released yet when this episode aired, but this is from 2017, not 2018)

Marvin Gaye - Let's Get It On