Paiste gongs make beautiful music, but among musicians, gong demand isn't elastic. One gong goes a long way. Planet gongs, on the other hand, are "crazy in demand right now," says Paiste's chief executive, Erik Paiste. "That has to do with the fact that the world is going to end on Dec. 21, 2012." Mr. Paiste has "no idea" if the end really is near, or if "sound energy" will hold it off, but he's happy because "it's keeping people interested in gongs."