Kaïn have always played roots music with a rock band's energy. But sometimes, they put pedal to metal and leave their traditionalist side in the dust. Check out “La pédale au plancher”, an asphalt-burning rave-up powered by a grease-fired electric-guitar riff and a battering-ram bassline. And on “Christophe Colomb”, they find the common ground between bluegrass and hardcore, marrying furious fingerpicking to a circle-pit-worthy stomp.