Rihanna. Pic/AFP

Dan Smith has expressed his desire to collaborate with Sia and Rihanna for his next song. The 31-year-old singer said he would love to work alongside the two music icons for an upcoming track. "I really want to collaborate with Sia. I do quite a bit of writing outside of the band as well, so there's a lot of people I want to write with," Smith said according to Contactmusic.