A paradox of blues music, particularly as it began to evolve into rock and R&B, is how happy it sounds in the right hands. Zydeco retains the basic structural spine of blues, but changes the tone from a raw outpouring of pain to untethered celebration. Alongside a couple proto-rock blues classics (like the irresistible “Honeydripper”), the soul of this chapter resides in New Orleans, with giddy hits from the likes of Clifton Chenier and Professor Longhair.