K-pop boy band B1A4 released their “Sweet Girl” music video teaser as part of their sixth album and revealed a vintage style concept.

The boys dressed up in a retro style look as they perform at a jazz bar..

Leader Jinyoung wrote “Sweet Girl” and is about a man who confesses his feelings to the love of his life.

The song will release online starting next Monday.

At the end of July, the group pre-released a bit of their sixth album for their fans.

The album consists of a mixture of ballads, dance tracks and neo-soul.

Below is their track list for “Sweet Girl.”

1. Sweet Girl
2. You Are a Girl I Am a Boy 
3. Ten Years Later 
4. Wait 
5. Love is Magic 

Take a look at the teaser below: