The international run of shows will conclude with Ferrell's appearance at the UK's Long Road Festival.
The Sneedville megastar currently sits atop the Billboard Country Airplay chart with ‘Last Night’.
Chase emerged onto the stage to share a celebratory tequila shot, ahead of Kenny and Kelsea's performance of ‘You and Tequila’.
The country prodigy impressed UK and Ireland audiences when she performed at C2C Festival in March.
The new song, which will be released on June 1, will feature on Colter's upcoming ‘Little Songs’ album.
The Oklahoma hitmaker is currently in the middle of the US leg of his ‘Burn, Burn, Burn’ tour.
