Dusty Hill, left, and Billy Gibbons from rock band ZZ Top perform at the Glastonbury music festival in England 2016.
Dusty Hill, left, and Billy Gibbons from rock band ZZ Top perform at the Glastonbury music festival in England 2016. Jonathan Short Invision/AP
Dusty Hill, left, and Billy Gibbons from rock band ZZ Top perform at the Glastonbury music festival in England 2016. Jonathan Short Invision/AP