The Second Disc is always updating our Holiday Gift Guide with items large and small that just might make the perfect stocking stuffer or present under the tree.  In recent days, we’ve added entries for four very different releases that are all worth seeking out. Emerson, Lake, and Palmer, Singles (BMG) (Amazon U.S. / Amazon U.K. / Amazon Canada) This handsome new vinyl box collects a dozen seven-inch, two-sided singles culled from Emerson, Lake, and Palmer’s U.K. and international discographies. Why release a bunch of edited versions from one of the world’s…