Singer Heejun Han met with Girls' Generation's member Tiffany to collaborate on a duet.

On Friday, Han released his duet song with Tiffany, "QnA." Their sweet voices are comforting to the ear over the smooth melody.

The start of the song has a bright beat and Han's sweet voice starts off the song. Then Tiffany's lovely voice adds on to create the perfect spring duet song.

The song has the lyrics such as "I think for a long time, what should I say to you," and "You haven't replied yet," and more make the song relatable for many. 

"Our duet song is finally out. A lovely song was created thanks to Tiffany," said Han.