Haebin song cover from her IGTV. I don't know the title of the song, but 2nd generation K-pop groups used to cover this song a lot. If I'm not mistaken, the song was sung by 1st generation of K-pop group.

Haebin's song cover video:
https://www.instagram.com/tv/B91qJp1B...

Haebin Instagram:
https://www.instagram.com/haebeeni_/

gugudan(구구단) Official Instagram:
https://www.instagram.com/gu9udan/
#gugudan #구구단 #한해빈