A customer browses music CDs in the 'chart' section of a HMV pop-up store in London, U.K., on Tuesday, Nov. 27, 2012. Fashion chain Hobbs is among those that have opened pop-up stores for the first time this year, while CD and DVD retailer HMV Group Plc is adding more than usual for the holiday in an effort to win business. Photographer: Chris Ratcliffe/Bloomberg via Getty Images