"After successfully overseeing the integration of Live Nation and Ticketmaster over the past two years, my job here is done. We put together the leading company across concert promotion, ticketing, sponsorship and artist management and delivered the great results promised by the merger," said Azoff in a statement.

"I especially enjoyed my time with my partner Michael Rapino, and he has demonstrated the ability to lead this company from now on. I'm looking forward to returning to the entrepreneurial world and continuing to work with all my friends and colleagues at Live Nation."

"Irving has been a valuable partner and friend for the past few years," said Live Nation Entertainment President and CEO Michael Rapino,. "We will certainly miss him and we thank him for his many contributions in building Live Nation to the global company it is today, entertaining 50 million fans and selling 200 million tickets in more than 40 countries around the world. I look forward to continuing to work with Irving on his artists' tours for years to come."

"I want to thank Irving for his leadership since the merger. While he has played a key role in setting Live Nation on a path for success, we understand his entrepreneurial desires," said Greg Maffei , lead external director for Live Nation Entertainment's Board of Directors, and President and CEO of Liberty Media. "Live Nation is now well positioned and we have tremendous confidence in Michael Rapino and his leadership team."