15&'s Baek Yerin Drops Teaser Video For 'Bye Bye My Blue'!

Baek Yerin has dropped the teaser video for 'Bye Bye My Blue'.

The teaser gives the impression of an emotional slow-paced track with the accompanied of the low keys sound. This will make Baek Yerin's comeback after 6 months since the release of 'Across the Universe' in November last year.

'Bye Bye My Blue' will come out on June 20th at midnight.