ZZ Top perform "Blue Jean Blues" from the documentary ZZ Top: That Little Ol' Band from Texas Billy Gibbons: Well, there's an easy answer to what's kept the band together for now nearing five decades, which is probably longer than most marriages. We still enjoy getting to do what we get to do. There's such a richness in meandering down this long trail together. Dusty, Frank, and I, four going on five decades later, we've stayed on course, and we turned it up, cranked it up, and we never looked b