Chris Stapleton and Kelly Clarkson will lend their vocals to songs that will appear on the soundtrack for the forthcoming animated film 'Trolls World Tour'.
Ballerini will play her hit duet "This Feeling" alongside the Chainsmokers during the special, which will also feature artists such as Dua Lipa, Ella Mai and Charlie Puth.
While festivalgoers missed out on sets from big names such as Chris Stapleton and Brandi Carlile due to bad weather, the artists who did get to play made those few hours worthwhile.