I also listened to WJSN's debut song, Mo Mo Mo.

I wonder if everyone knows this song?

Good for light listening..

Should I call it the quintessential girl group debut song?

Back then, I listened to it often and excitedly as part of my daily routine.

I thought of listening to this for the first time in a while, and it's just as good as ever.

The music video thumbnail features Cheng Xiao, who isn't a member right now...