15&'s Baek Ye-rin will be returning with a new single called 'Bye Bye My Blue' this summer. The teaser video for the track has already been released!  Ye-rin seems to be taking things slow in a sweet ballad. She is seen looking emotional; the teaser gives off a feeling of gloominess and loneliness. 

The music video is scheduled to be released on 20th June 00:00 hours KST.

Check out teaser images of Ye-rin below:

The artist debuted together with Park Ji-min as 15& in October 2012 with the track, 'I Dream'. Later in 2015 she made her solo debut with the album 'Frank', of which the title track was 'Across the Universe'. This is her first comeback since her solo debut.