A Train to Autumn has returned with deeply emotional new single "Farewell Again."

The Cube Entertainment ballad group released both the single and its accompanying music video on February 25 at 6 PM KST.

"Farewell Again" is a sentimental ballad with mournful lyrics, and is the group's second single in an ongoing 'break-up' music project series. In the video, the main character suffers from the painful end of a relationship, so distracted by the loss that it becomes difficult for her to do much more than drink and mourn.

Check out the music video for "Farewell Again" above!