ZZ Top is an American rock band formed in Houston, Texas, in 1969. For 51 years, it consisted of vocalist-guitarist Billy Gibbons, drummer Frank Beard, and bassist-vocalist Dusty Hill until his death in 2021. ZZ Top developed a signature sound based on Gibbons’ blues style and Hill and Beard’s rhythm section.

Rio Grande Mud is the second studio album by the American rock band ZZ Top. It was released on 4 April 1972 by the London Records label. The album title was inspired by the Rio Grande, the river that forms the border between Mexico and Texas.