Highest demand for tickets for one music concert

Highest demand for tickets for one music concert
Who
Led Zeppelin
What
20000000 total number
Where
United Kingdom (London,)
When
10 December 2007
Led Zeppelin’s (UK) one-off reunion show at London’s O2 Arena on 10 December 2007 attracted more than 20 million ticket requests. Such was the demand for the 9,000 pairs of tickets that were made available to the public that they were reported to be selling for up to £1,800 ($3,654) on eBay – more than 14 times their original price of £125 ($253). The two-hour concert, the legendary rock band’s first full show since 1979, was dedicated to Atlantic Records founder Ahmet Ertegun (USA, b. Turkey, 1923–2006), who signed the group in 1968.