RESCENE [PULSE] Highlight Medley - Finest Thing

In the Korean comments

The production details are becoming listening cues: one comment singles out the “cha-ching” part, while another says the bass comes through especially clearly on headphones. A separate commenter describes the song as having an overseas pop sound and notes that its lyrics are entirely in English.

What the words mean

비트 체급 지린다 (biteu chegeup jirinda, literally “the beat’s weight class is insane”) means the beat sounds exceptionally massive or powerful. 체급 (chegeup, weight class) borrows the language of combat sports to describe sheer sonic heft, while 지린다 (jirinda, roughly “is insanely good”) is highly casual, exaggerated slang with a mildly crude origin.