Irving Azoff to Leave Live Nation Irving Azoff, the executive chairman of Live Nation Entertainment, the concert and ticketing giant, is leaving the company, Live Nation announced on Monday. As part of his exit, Liberty Media, already one of Live Nation's largest shareholders, will buy 1.7 million of Mr. Azoff's shares, giving Liberty a 26.4 percent stake in Live Nation. According to recently filed corporate disclosure documents, Mr. Azoff controlled about 2.6 million shares in Live Nation, either directly or through a family trust. Mr. Azoff, 65, has been one of the most powerful executives and artist managers in music for four decades, and Live Nation has been only his most recent endeavor. Along with Michael Rapino, who remains the company's chief executive, Mr. Azoff helped organize the merger in early 2010 of Live Nation - then largely a concert promotions company - and Ticketmaster, which also included Mr. Azoff's Front Line management business. Live Nation will continue to own Front Line, but Mr. Azoff will take some of his longtime management clients with him, including the Eagles, Christina Aguilera, Van Halen and Steely Dan. Mr. Azoff said that leaving would relieve him of what he described as burdensome corporate duties, and let him work again in his preferred mode as an entrepreneur. "It's no secret that I haven't been a fan of public companies for some time," Mr. Azoff said by phone from Mexico, where he was spending the holidays. I looked at my calendar for the beginning of next year and I was able to clear 90 days for things that went into dealing with a public company, which I can now devote to productive work. He cited "taxes and estate planning" as the reasons for leaving on the last day of the year. Mr. Azoff will join the board of Starz, the cable television company also owned by Liberty Media. Mr. Azoff also serves on the boards of Clear Channel Communications and the media and entertainment company IMG. Live Nation announced Mr. Azoff's departure after the market closed on Monday, but news of it was first reported by Bloomberg News before the end of the trading day. Live Nation's stock closed at $9.31, up about 3.7 percent for the day. Live Nation did not announce who would be taking over as chairman in Mr. Azoff's absence. Liberty, in addition to Live Nation, also has a major stake in Sirius XM Radio, and has spent the last several months in the process of taking that company over. But when asked whether he might take over from the recently departed Mel Karmazin as chief executive of Sirius, Mr. Azoff scoffed. "I'm never going to work for a public company again," he said. Any public company.