180 Gram Vinyl Cut From Original Analog Masters. Housed in Heavyweight Gatefold Sleeve. Catalog Number: 0603497823857 Color: Black Format: LP UPC: 0603497823857 Rio Grande Mud is the second album by ZZ Top and was released in 1972. The album title was inspired by the Rio Grande, the river that forms the border between Mexico and Texas and means "big river" in Spanish. By this release, ZZ Top was honing the tough blues rock hybrid that would make it a certified U.S. arena headliner by the mid-70's. While the album didn't spawn the big radio hits of its later releases, Rio Grande Mud was another incredibly consistent and inspired ZZ Top classic.