Today in 2007 the surviving members of Led Zeppelin reunited, with drummer Jason Bonham sitting in his father’s chair, for a one-time concert at the O2 Arena in London. The concert, originally scheduled for Nov 26 but postponed when Jimmy Page broke his finger, was Zeppelin’s first full concert performance in 27 years, and their first appearance all together in 19 years. It was to benefit the Ahmet Ertegun Education Fund. Ahmet Ertegun was the founder of Atlantic Records, Zeppelin’s label, and he had passed away the previous December. Tickets cost £125 (~$200) and were made available only by lottery; there were supposedly over 20 million requests for the 18,000 available tickets. CDs and DVDs of the event, titled Celebration Day, were released in November 2012.