The beleaguered Calgary Philharmonic, which very nearly became part of the list of defunct North American orchestras last year, is back in business, with a tough new CEO at the helm and a professed commitment to financial responsibility above all. In addition to hiring retired oil executive Mike Bregazzi to run the organization, the CPO is dramatically restructuring the role of its board, increasing its regional visibility, and introducing a flexible ticket-pricing plan which it hopes will draw new audience.