Bolbbalgan4 has revealed an opening trailer for her upcoming single album 'Filmlet'.

In the trailer, Bolbbalgan4 (Ahn Ji Young) poses for her album cover, and fans get a preview of the tracks and lyrics from 'Filmlet'. The teaser starts with the question "What's the problem? I know the answer," before listing the song titles "Red Lipstick" and "Dancing Cartoon".

'Filmlet' is due out on November 4 KST. Check out Bolbbalgan4's opening trailer above!