The Whitewall Gentlemen have a finely tuned chemistry simmering beneath their swampy cocktail of blues and Southern rock. Comprised of 4 members that look all of 22, they score high marks for delivering all the elements of headbang-induced whiplash: chugging guitar, rumbling bass, auditorium-worthy bravado. “Promised Land” is just the type of racket to get this week started off right. By giving it the finger. They play The End this Monday night with Resident Zero and The Bracers, and Pretty Ugly. –Terra James-Jura