BTOB are releasing teasers one after another before their anticipated comeback on Februaru 17.

The group release the audio previews for their tracks, 'Is This The End','Hello', 'Hello Mello', and 'Melody' through their official Youtube channel. The short clip reveals a group photo of the boys along with the snippets of the songs.

The 2nd has sweet melody for a mellow ballad which has a lyrics of telling someone not to go. The boys showcase their emotional and powerful vocals in this one. On the other hand, the track 'Hello' has a light feeling on it, with a cheerful melody which can be uplifting to anyone listening to it. 'Hello Mello' offers the raps and bright mood with lively upbeat music. Lastly, 'Melody' showcases the members' emotional vocals accompanied by piano.

Liking their tracks so far? Listen below: