B1A4 "Solo Day"

B1A4 are on their second comeback of the year after releasing their first album and winter midtempo track, "Lonely" back in January.

B1A4 Just Can't Let It Go In Their "Lonely" Comeback

I was waiting for the day that B1A4 went back to more melancholic tunes like "Tried To Walk". I mean, their cute aegyo songs are nice too, but the group really know how to capture deeper emotions with their songs when they are allowed to. That's why "Lonely" may arguably be the best song.