Casual brand UNIONBAY released a sweet and cute pictorial featuring singers IU and Seo In Kook. The theme for this shoot was 'play with', where IU and Seo In Kook posed with various iconic instruments such as the guitar and keyboard, showcasing their image as musicians. Other concepts show IU and Seo In Kook in casual wear and baseball jackets. IU and Seo In Kook have recorded the UNIONBAY CM song together. After the song was revealed on the homepage, there has been a lot of attention from the fans. [gallery] Source: Newsen