kane slammed his guitar into the cave walls , just as hank adaline used to demolish the top of his grand red piano , so intense and in the moment that it was no longer apparent to kane that he was spraying chocks of wood like a chipper , smashing the guitar into the wall , beating the cave in hopes that it will crumble because this is the apotheosis of passion , whack whack whack until all that remained in kane 's hands were a few broken strings hanging from a split guitar neck .