ZZ Top

ZZ Top — from left, Frank Beard, Billy Gibbons and Elwood Francis — will perform Saturday at Dignity Health Amphitheatre.

ZZ Top's "Raw" is as close to being an accidental album as it gets.

The album, which was released last July, is drawn from a session at Gruene Hall in New Braunfels, Texas, in which singer/guitarist Billy Gibbons, bassist Dusty Hill and drummer Frank Beard set up and played versions of such familiar songs as "La Grange," "Tush," "I'm Bad, I'm Nationwide," "Gimme All Your Lovin'" and "Legs" in the most live, spontaneous and basic setting possible.