Blues, meet electric guitar. The signature genre of broken hearts, typically tortured and melancholy, becomes strangely confident once plugged in, filled with fuck-the-world swagger. In the hands of John Lee Hooker or Muddy Waters, the guitar is a tool of chaos, adding an unpredictable racket to lean and mean songs. The singers here sound equally electrified, whether delivering Howlin’ Wolf’s acid-drenched growl or Janis Joplin’s grimy bellow.