Kings Of Leon are about to launch their new album and have just released this promo video shot with the cast of Always Sunny In Philadelphia including Glenn Howerton, Charlie Day and Danny DeVito.
The band took a cameo role in an episode of the show in 2011, whilst the new series has just started to air in the US.
Mechanical Bull is being released worldwide on September 24th and looks like it should be a return to roots for the band.
Watch the promo below: