When Dweezil Zappa released his first album, Havin' a Bad Day, in 1986, he was a teenager enthralled with the shredding of Eddie Van Halen. As the years passed, Zappa honed his chops, dabbled with television, and eventually became the custodian of the musical legacy of his father, Frank Zappa. This role didn't come without its share of problems, chief among them a public feud in the mid-2010s with his brother Ahmet over the rights to performing under the name Zappa Plays Zappa, but Dweezil persevered through this, helping keep his dad's weird, complicated art rock alive in the...