Seo In Guk and Swings have joined hands, literally, for a collaboration for Swings' upcoming single.

Brand New Music hinted on the collaboration on Twitter, "Seo In Guk-Swings, spotted in the studio 'What is going on?'," and shared a photo of the two artists putting on their hip hop faces as they greet each other in the studio. It was later revealed that Seo In Guk will be featuring in Swings' upcoming single.

Curious to hear their new sound, fans commented, "A collaboration to watch out for," and "What kind of song will they sing?"

Swings will join the comeback rush this month with his new single, which will be released on the 13th!

Watch Seo In Guk and Swings collaborating in the studio in the clip below.